alt Hacker NewsDevelopers need to optimize and debug their game for each console. Xbox/PS are completely different platforms (UWP vs heavily customized BSD) so fixes don't transfer over. Adding another incompatible target with new store guidelines and system APIs adds a lot of work so Apple would have a hard time convincing them.
Now add the perception that Mac users don't play games and Apple devices are made for people already in their ecosystem. The only way they could gain market share is competing with Steam Machine as a more open platform, but without a giant library of existing games.
My Macbook Pro is my favorite emulator machine, and CrossOver is incredibly good at running most of the games I want to play.
OSX has also recently released a proton-style compat layer so we are seeing gains there as well.
For a long time Apple was outright AGAINST games. They wanted their machines to be for musicians and artists, not bratty kids.