One (which, to be clear, is not how I interpret your comment) is the tired gotcha "if you hate society, why do you partake in it?", which is simply not substantial enough to answer.
The other argument I've seen is actually worth some thought, though I'm not ready to give a definitive answer in either this case or as a general principle:
Entities that play a certain game effectively endorse that game by playing it.
The devil lies in the corollary to that observation: whatever prizes are awarded by that game will only go to entities that are willing to play that game.