Try having none for a while. It's hard to stand by "principles" when you aren't eating. A lot of people are very, very afraid of stuff like that, even if they have not suffered in a long time or never really, truly suffered but maybe their parents grew up hungry and instilled in them terror of doing without.
I mean, some folks stand by their principles. But, seriously, it's not easy.
Oculus wasn't exactly starving for cash, and even if they were investors would have beaten each other to death for a chance to pour some cash into it.