This is like the guy a few years ago who felt social pressure to pay back corporate debts for his C corporation because nobody was telling him that the debts applied to his company and not to him personally. But the risk of the company vanishing was priced into all those contracts! The same is true for investments. Anybody who invests professionally in startups has a valuation function of some sort that captures the fact that you --- even if you're Jack Dorsey or Elon Musk --- are more likely than not to fail before your company becomes liquid.
(I am also a founder; this time of a bootstrapped company, but I was one of three founders of a VC-capitalized company a few years prior to starting this one, and the two other startups I worked at were both VC companies.)