Edit: basic 3rd grade grammar.
The difference between founders and investors is that founders care about more than just expected value. A founder with no assets other than his stock in the company will often prefer to sell now and lock in the current price rather than keep rolling the dice. So to the extent there is a difference between the motivations of founders and investors, it's exactly the opposite of the situation this writer describes.
EDIT:
I guess you could say that entrepreneurs and investors are all actually working for Google or IBM or whomever, trying to find the next big thing. They're just not getting a salary but working on a commission. And once in a while, some startup may get away, do an IPO and become a real force, but that's just like an agent on commission starting his own competing business. That's a risk any employer takes.
That's not true. VCs will only invest in a startup if they think it has a chance of an IPO. Angels prefer that sort of startup too, though they are not as rigid about it as VCs.
IPOs are unquestionably the "motor" of the VC business. That's what drives all their thinking.