I don't really ever see Mac gaming growing unless a radical shift in philosophy happens at Apple. Similar things have been said about Linux but the reason gaming has been growing on Linux is because no one body lords over it and Valve and others have made a concerted effort to help Linux gaming. Apple LOVES to have control and unless they can create a controlled environment that can make them money off gaming (i.e. selling games off the app store and taking a % of the sale) we won't see them make a serious effort. There might be a few within who are passionate and make things like GPT that give people hope but higher ups will inevitably ask WHY?