There's been some buzz recently on the Internets about businessmen, entrepreneurs, and other assorted monied types "going Galt." Jesse Taylor talks about it here, and McArdle (especially her comments boodle) deals with it here.
John Galt, of course, is the jackass from Ayn Rand's Atlas Shrugged who decides to just say "fuck you" to society and its stupid rules and leave it behind, taking all those he refers to as the "productive" people - by which he means inventors, entrepreneurs, executives, etc. - with him. (I haven't read the novel, just the Wikipedia page, so I'm probably oversimplifying here. I'm sure Jacob will correct me sooner or later.)
Of course, the problem with this idea is that it assumes that the upper echelon of society is irreplaceable. That is, if someone who would sell widgets decides to leave society instead, no one will sell widgets. This is foolish - of course someone would end up selling widgets if people wanted to buy widgets. In a society of 300 million people, it's somewhat fallacious to assume that profitable market niches would go unfilled because someone decides to abandon said niche.
As for inventors - if Edison hadn't invented the light bulb, do you honestly think we wouldn't have incandescent light right now? Of course we would. Someone else would have come up with the idea. If Bell hadn't invented the telephone, Gray still would have done so. If Google didn't exist, Yahoo would be dominating the internet advertising market (possibly with a slightly different algorithm, but whatever).
Put differently: what do you suppose would happen if, say, upper management of Google were to bail en masse? Here's what would happen - middle management would start running the company. And current programmers (and a few MBAs from outside) would become middle management. And Google would hire a bunch of programmers. The pyramid would remain in place - there would just be a change of cast.
So you know what? If you top-dogs want to "go Galt," that's fine by me. Get your bitter asses outta here. You leave, and someone else will gladly take your job. And someone will take that person's job. And someone who's currently unemployed will take their job. In fact, with the labor market as slack as it is, rich people "going Galt" and taking themselves out of the labor market might be the best job creation program of them all!