Allowing startups to begin as non-profits for tax benefits, only to 'flip' into profit-seeking ventures is a moral hazard, IMO. It risks damaging public trust in the non-profit sector as a whole. This lawsuit is important
I don't think it makes sense for a humanoid species, but silicon based, perhaps? Iain M Banks' The Algebraist [0] has a near immortal species called Dwellers that manage it somehow :)
I've often thought planet TrEs-2b [0], the darkest planet ever discovered orbiting a star, would be the best candidate for extra terrestrial life. My theory is that its darkness is down to the fact that the civilisation there has figured out a way to harness solar energy to near 100% capacity, along the lines of a Dyson sphere [1].