Comment by mahboi

Indeed DirectX is king, but OpenGL and Vulkan aren't nothing. There was a long period of time, maybe 2000-2016, when high-budget games being released for Mac wasn't so uncommon, or at least it was more common than today, and those often used OpenGL. Instead of Apple rallying around the only alternatives to DirectX, they made yet another way. I'm assuming Mac games are just not a priority for Apple, which is fine.