[FakeSamAltman]

Three kids, a safe job and an Audi is not ambitious. And it certainly isn't netting you a YC partnership at 25.

[stephencanon]

Founding yet another tumblr-for-cats and selling ads isn't ambitious either; you can do mundane work at startups just as easily as you can in a big corporation. You can do ambitious work at both of them, too. For kids who don't come from a wealthy family, there's something to be said for building up a minimal safety net early on by doing ambitious things in a relatively stable large firm. It's not the only way, though (obviously).

[sliverstorm]

Ah, but what if it was

three kids, a safe job, two Ferraris, and the ear of Larry Ellison?

or how about

Climb the ladder, eventually transition to politics, and become a Senator on a technical platform?

ruswick's point is that ambition is not the sole province of the startup crowd.