si on parle des us, oui c'est un mythe, la plupart des millionaires le sont devenus par héritage et non par l'entrepreunariat et les études
Contrary to myth, most of today's plutocrats are not the kind of Steve Jobsian visionary risk-taking entrepreneurs or superstar celebrities. The .01%, for instance, tend overwhelmingly to be high-end corporate managers and executives, particularly on Wall Street, operating in interlocking networks that inflate the standard of what an executive is "worth." Or they are the heirs of the great entrepreneurs (4 of the 10 richest Americans are children of Sam Walton), inheritors of fortunes of which it can truly be said, "someone else built that."
http://edition.cnn.com/2014/04/09/opinion/liu-income-inequality/index.html?hpt=hp_t4