Are Silicon Valley investors stupid enough to throw their money at any bright young dropout with a change-the-world idea? The fact that some Ivy League dropouts found billion dollar companies does not mean a particular Ivy League dropout chosen at random (or one of the many who express a desire to change the world) has a non-zero chance of returning $$$ on investments.
Demonstrating that inteligence and common sense are seperate traits, the latter not always accompanying the former.