People said "but how are you going to monetize" and everyone said "we'll figure that out later."
So even if it was true back then (and it was), spez was probably 20-25 when he sold his soul? You don't exactly have the benefit of worldly wisdom when you are that young.
So while what you say might be true, there is still the question of what culture your from, how these ideas enter that culture, and when those ideas are introduced to the people in that culture.
There is the subjective experience of "collective consciousness" to deal with and subjectively, I think that "growth is great" was louder than "short termism is bad".
We were drunk on VC funded growth, and now we are dealing with the hangover and asking how we got ourselves into the position. Getting drunk was great. The hangover is not.