I agree that it's simplistic, but it captures the fact that organizations need money to survive. Yes, companies offering "free" products have to serve two masters: the ones who use the product, and the ones who pay the bills. For many, the temptation will be strong to maximize profits as far as possible without completely losing the users. Facebook has been in the news a lot because of this very thing.

I think the core of this statement really is that if the users and funders of a product are the same, their interests are much better aligned.