To be honest, the inability to run PUBG is probably the biggest weakness of the Mac platform right now for me.
But with the M1 this is not really a technical limitation any more. It's just that developers aren't putting the effort into porting their titles to Metal & Apple Silicon. It's still a relatively niche platform. Hopefully this will change over time.
games are a niche market in itself. If there were hundreds of millions of users that cared about PC Gaming Apple would care. If Apple’s research determines there are enough people to move the needle in sales, they would do it. I also believe they are looking to the AR and MR they are working on to bring an industry shifting product to market. Think about using an Apple Watch with a controller in the other hand along with Apple glasses to bring titles to life without huge devices on you head.