Source: Hypercompetitive rivalries, 1994, p. ix
Quotes about competitor
page 2

Counterterrorism and Cybersecurity: Total Information Awareness (2nd Edition), 2015
Source: The architecture of markets, 2001, p. 155

Bill Parcells — reported in Jean-Jacques Taylor (February 28, 2003) "The best is history - 'We have to get it done without Emmitt,' Jones says; Smith thinks he can prosper on new team - Cowboys release NFL's all-time leading rusher", The Dallas Morning News, p. 1A.
About

Speech at the Computer History Museum, as quoted in InfoWorld magazine (October 2001) http://www.infoworld.com/article/04/10/01/HNgatestalksmuseum_1.html
2000s

Source: 1960s, A concept of corporate planning, 1969, p. 1 as cited in: Henry Mintzberg (1994) Rise and Fall of Strategic Planning. p. 98.

In reference to a suggestion by Microsoft's Peter Moore that one could buy a Wii and an Xbox 360 for the price of a PlayStation 3
On Nintendo's competitors
Source: USA Today: Nintendo hopes Wii spells wiiner http://www.usatoday.com/tech/gaming/2006-08-14-nintendo-qa_x.htm

“Airbnb is not our competitor.”
Interview with Robb Report http://robbreport.com/travel/hotels/is-the-traditional-hotel-chain-dead-2779282/
Women in Trade Unions (1920)
"Corporations, Mercantilism, and Capitalism," http://www.ncc-1776.org/tle2010/tle576-20100627-02.html 27 June 2010.

MM Lee Kuan Yew on Singapore workers, History of Singapore, 2005
2000s

Scotland in the World Forum (February 4, 2008)

“Competitors punch you in the jaw, but investors have you by the balls.”
"How to Fund a Startup" http://www.paulgraham.com/startupfunding.html, November 2005
"And All of Us So Cool" (p.340)
There's a Country in My Cellar (1990)

Source: Master of Precision: Henry M. Leland, 1966, p. 147; Leland talking about his idea for a V8 engine around 1913-14. Partly cited in: Alexander Richard Crabb (1969), Birth of a giant: the men and incidents that gave America the motorcar. p. 315

Source: Principles of Economics (1998-), Ch. 1. Ten Principles of Economics; p. 10

Gregory S. Paul (1988) Predatory Dinosaurs of the World, Simon and Schuster, p. 69
Predatory Dinosaurs of the World

Dissenting, United States v. Columbia Steel Co., 334 U.S. 495 (1948)
Judicial opinions
“The ability to learn faster than competitors may be the only sustainable competitive advantage.”
Arie P. de Geus, " Planning as learning https://hbr.org/1988/03/planning-as-learning/ar/1." Harvard Business Review, March/April 1988: 70-74.
Richard A. D’Aveni (1997). " Waking up to the New Era of Hypercompetition https://www.researchgate.net/publication/233454654_Waking_Up_to_the_New_Era_of_Hypercompetition". The Washington Quarterly, Sept. 3, 1997. p. 183–195. Lead paragraph.
Why Women Are Also Incapable of Intimacy, pp. 120–121
What Men Still Don't Know About Women, Relationships, and Love (2007)

Source: 1980s and later, Models of my life, 1991, p. 166; As cited in Ronald J. Baker (2010, p. 122).

Epilogue
Raising the Peaceable Kingdom (2005)

Free Anti-Phishing Training from Sacha Baron Cohen http://itbusinessedge.com/blogs/unfiltered-opinion/free-anti-phishing-training-from-sacha-baron-cohen.html in IT Business Edge (17 July 2018)

Statement at Oxford (24 October 1931), published in Young India Vol. 13 (1931), p. 355
1930s

"The Descent of Islam", National Vanguard magazine (January-February 2003)

Broadcom/Qualcomm Merger: A Train Wreck in Slow Motion http://itbusinessedge.com/blogs/unfiltered-opinion/broadcomqualcomm-merger-a-train-wreck-in-slow-motion.html in IT Business Edge (1 March 2018)
“Without competitors there would be no need for strategy,”
Source: The Mind Of The Strategist, 1982, p. 36
Context: Without competitors there would be no need for strategy, for the sole purpose of strategic planning is to enable the company to gain, as efficiently as possible, a sustainable edge over its competitors. Corporate strategy, thus, implies an attempt to alter a company's strength relative to that of its competitors in the most efficient way.

Progress and Poverty (1879)
Context: There is, and always has been, a widespread belief among the more comfortable classes that the poverty and suffering of the masses are due to their lack of industry, frugality, and intelligence. This belief, which at once soothes the sense of responsibility and flatters by its suggestion of superiority, is probably even more prevalent in countries like the United States, where all men are politically equal, and where, owing to the newness of society, the differentiation into classes has been of individuals rather than of families, than it is in older countries, where the lines of separation have been longer, and are more sharply, drawn. It is but natural for those who can trace their own better circumstances to the superior industry and frugality that gave them a start, and the superior intelligence that enabled them to take advantage of every opportunity, to imagine that those who remain poor do so simply from lack of these qualities.
But whoever has grasped the laws of the distribution of wealth, as in previous chapters they have been traced out, will see the mistake in this notion. The fallacy is similar to that which would be involved in the assertion that every one of a number of competitors might win a race. That any one might is true; that every one might is impossible.
For, as soon as land acquires a value, wages, as we have seen, do not depend upon the real earnings or product of labor, but upon what is left to labor after rent is taken out; and when land is all monopolized, as it is everywhere except in the newest communities, rent must drive wages down to the point at which the poorest paid class will he just able to live and reproduce, and thus wages are forced to a minimum fixed by what is called the standard of comfort — that is, the amount of necessaries and comforts which habit leads the working classes to demand as the lowest on which they will consent to maintain their numbers. This being the case, industry, skill, frugality, and intelligence can avail the individual only in so far as they are superior to the general level just as in a race speed can avail the runner only in so far as it exceeds that of his competitors. If one man work harder, or with superior skill or intelligence than ordinary, he will get ahead; but if the average of industry, skill, or intelligence be brought up to the higher point, the increased intensity of application will secure but the old rate of wages, and he who would get ahead must work harder still.

Speech in the Albert Hall, London (29 November 1910), quoted in The Times (30 November 1910), p. 9
Leader of the Opposition

Speech in Newcastle (25 May 1956), quoted in The Times (26 May 1956), p. 6
Chancellor of the Exchequer

Cooperation, Terrorism, UK & USA, President Trump, Resolving Conflict, Defense, Crimea, The Media, Nuclear Weapons Policy: 15th Plenary Session (18 October 2018)

"The Factors of Organic Evolution", p. 35
The Universal Kinship (1906), The Physical Kinship

Vol. 4, pt. 2, translated by W.P.Dickson
The History of Rome - Volume 4: Part 2

Sergio Ramos, 2016 http://globoesporte.globo.com/futebol/futebol-internacional/noticia/2016/01/sergio-ramos-elogia-thiago-silva-e-estranha-ausencia-da-selecao.html
From former and current footballers

http://www.guardian.co.uk/football/2009/apr/22/paul-scholes-tributes-600-games-manchester-united
Thierry Henry, World Cup winning France forward

Source: Justin Huang (2018) cited in " Taiwan’s Taitung to crown 2018 WSL junior and longboard champions https://www.taiwannews.com.tw/en/news/3539482" on Taiwan News, 27 September 2018
"Who Owns the Benefit? The Free Market as Full Communism" https://theanarchistlibrary.org/library/kevin-carson-who-owns-the-benefit-the-free-market-as-full-communism (2012)

Quoted in "Paul Sloane Talks about Strategies for Creating Effective Innovation Processes" https://innovationmanagement.se/imtool-articles/paul-sloane-talks-about-strategies-for-creating-effective-innovation-processes/, InnovationManagement.se (2 May 2019)

“It’s possible that having a strong competitor would encourage us to compete better.”
Interview with CNBC (October 4, 2019)