With previous Intel Macs, a major reason cited for why few AAA games were ported to the Mac was not just the market share of the Macs overall but that the most common models sold had weak Intel HD graphics. Thus very few Macs had the potential to give good gaming experiences for AAA games. Getting 8 FPS on the lowest settings is not a good experience and that’s why the recommended minimum specifications for that game are much higher. So developers saw it as a fraction of a fraction who would actually be able to play their games.
@senttoschool ‘s basic point is good one: that by increasing the power of the base Mac means every Mac sold will be able to deliver much better performance and be capable of driving good gaming experiences in a way that previously most Intel Macs sold couldn’t.
This doesn’t automatically translate into more games definitely coming to the Mac but it’s fair to say one of the commonly cited impediments to that happening has been obviated. You could argue that the M1 adds others and others remain, but weak graphics hardware in the most commonly sold models is no longer one of them.