AI has been absolutely great for serious game dev as well. I am now completing dozens of tickets a week on my game engine and building features and architectures I've planned and theorized for years but never had the time to actually build them. Seeing them come to fruition one by one over the last few weeks and months has been incredibly rewarding.

For example, I've long wanted to do a specific architectural approach that allows my Minecraft server's players and standalone game players to crossplay with each other. Now it's actually happening!

I think the problem in the future will not be making games, it will be standing out because games are becoming easier and easier to make nowadays! There are still many game genres, especially multiplayer, that suffer from not having a big enough playerbase and too much fragmentation can definitely worsen the game experience there.