But they are different and while apple indeed markets them to consumers, not just pro users, the percentage of people wanting to play games is still low imo
Why? You said it yourself Apple moving to its own proprietary hardware. Why would any company decide today to port a game when apple moving to a new platform?
Again we're talking about a subset of a 10% marketshare. The cost is high and the return is low.
Edit:
Let me just add with the advent of streaming and its only going to grow, it makes more sense for game publishers to push mac users to the streaming service they support. They get revenue, but not the overhead of developing games for a non-standard platform and there's no day to day overhead of maintaining games on a different platform. I foresee this being the future perhaps even on the PC side as well.