With Apple’s switch to Intel, there was much more support for porting games to Mac. Unfortunately, since Apple overpriced commodity Intel hardware, Macs were noticeably underpowered especially when compared to PC desktops, which was made even slower due to the lack of video card options. It made no sense to play games on a slower system. And that is how the idea of playing non-iOS games on a Mac died.
I am happy to use PCs for games, while using Macs for everything else.