In the last few year many of these people have seen these companies go public, and their imaginary Options/RSUs suddenly turn to liquid assets. Company hasn't started making profits, P/E is negative, but TC has gone up by 50%-200%. That certainly feels like success.
Looking back at my own career the companies that made the least profit (including negative) are the ones that have paid me the most.
I'm old enough to remember the pre-dotcom bust chats of "new economy" and "things are different now", and how all of the stuffy old finance people who thought businesses should make more than they spend where ultimately proven correct.
For many people, even in their late 30s, the ability for a company to actually make more than it spends has been an academic curiosity, hardly relevant to the success of a company.