[bogs_carut]

It's only a myth if you're examining the situation from a singular angle -- that of monetary risk.

There's a great deal of risk and uncertainty involved in foregoing the completion of a degree, a potentially-salaried position at a stable firm, and so forth in favor of starting a company that is statistically unlikely to succeed.

[coliveira]

In the example I gave (Facebook), there is no indication that the founder gave up on the degree until the company had already some traction.