You are in a bit of an echo chamber. Compare the PC gaming market to the console gaming market to the mobile gaming market. Games do not "basically drives Windows". Office productivity drives Windows sales. Education (historically) and Creative productivity drive Mac sales. Apple is a trillion dollar company, leader in mobiles, they are not interested in trying to wrestle out a minor fraction of desktop gaming market share from Windows when growth in gaming is predominantly in the mobile platform and already a multiple of the desktop market.
https://www.mordorintelligence.com/industry-reports/global-gaming-market
Apple doesn't care about MacOS games because it would not drive a significant number of sales, gamers are fickle/hostile/toxic, and AAA game studios are who make games, not Apple, they require massive cash infusion at high risk compared with mobile gaming studios that can **** out fart apps that make Apple huge cash on the app store with no investment.