If competition has its evils, it prevents greater evils. … It is the common error of Socialists to overlook the natural indolence of mankind; their tendency to be passive, to be the slaves of habit, to persist indefnitely in a course once chosen. Let them one attain any state of existence which they consider tolerable, and the danger to be apprehended is that they will thenceforth stagnate. … Competition may not be the best conceivable stimulus, but it is at present a necessary one, and no one can foresee the time when it will not be indspensable to progress.

John Stuart Mill (1806–1873) English philosopher and economist

Principles of Political Economy, 4.7.7 (1848)