That depends a lot on your past background. A number of the employees at these megacorps have either worked in finance before, or at one of the big consulting firms, or they've done the Valley dance between the hot growth companies of the moment. So they do have that reference point between many different companies. There's sort of a revolving door among many of the elite institutions that run the world - Ivy League universities, large dominant corporations, big-name consulting, finance, and government.

If this doesn't apply to you, and a megacorp was your first job out of college that you stuck with for your whole career, you may want to be a bit more cautious with your capital.