The ironic thing is that he lists monetization last, but simply by uttering that sentiment he tells us that they are really thinking about monetization first, aka the end goal of the product.
I think your altruism is misplaced because they most certainly are thinking of $$$ first and foremost.
No it’s only a theory that emerged in the 70’s (https://en.m.wikipedia.org/wiki/Friedman_doctrine).