Blockchain-based gaming may prove to be lucrative, but it's not an ideal long-term solution due to Blockchain tech's limitations. For games to scale, they'd need to run on a centralized server. There's no other way. But the hype has led game developers to foolishly believe Blockchain is the ideal solution for everything. I'd imagine how gamers will be frustrated once the Blockchain becomes heavily congested. Fees will soar while performance will decline considerably. And don't let me get started on bear markets. With these and many other issues, I don't think gaming on Blockchain is the future. Just my opinion

There are different games and they use different blockchains so all players are not concentrated in one game. There will be new games with better graphics and more interesting scenarios so I don't think that network will not manage with it.
As for games' potential, I also don't think that gaming is our future. Actually, I am not really fond of computer games and there are many more useful technologies than just gaming.