It's hard to feel anything but apathy about the prospect, but it's not impossible. Given the focus that games on Mac have been given some very high profile outings at Apple PR events, their embrace of Wine/Crossover via GPTK, and the current Apple Arcade and Playstation controller compatibility... the conversations are obviously happening at a high level.
What I'd like to see is some kind of Apple TV Ultra, with an M4 or similiar. Take a page out of Nintendo's playbook, and develop hardware targeted, high quality titles centered on gameplay and polish. You'd have a semi-dedicated living room console like device, that is nearly 100% software compatible with a broad array of phones, tablets, laptops, and desktops. If the exclusive games are compelling, people will play them and in turn attract 3rd party devs to the platform.