It doesn't matter the domain, on a long enough time frame, humans will take the fun activity they made and, in their quest to maximize/extract fun from it, destroy it.

Professional sports/games are oxymorons. When no one playing is having fun, the point is lost.

Our addiction to making everything in life into a serious competition against one another will be our species' end. We claim to be intelligent animals, we get drunk on the idea of our own self-importance as a species, but if we were intelligent, we wouldn't shun mutual cooperation for mutual benefit as much of civilization, and American society to be sure, does. We can't even have interactive fun without it being turned into some hyper-serious struggle for dominance by some assholes.