Mac gaming is probably getting better thanks to wine, crossover, GPTK and Whisky [1]. I am not a gamer but I have seen others playing serious Windows games like FF7 remake (not sure if that counts) on mac.
I think the fundamental problem still remains that games unlike softwares are media and cannot be substituted with equivalents. By pushing their proprietary tech and neglecting native macOS ecosystem over the years, Apple has willingly pushed themselves in to the same corner as with console makers where they cannot compete with the value proposition of PC because of the overwhelming majority of exclusive titles that only run on PC. It's either all or nothing in terms of game coverage, because that's what ultimately allows consumers to "buy one device for (mostly) everything" for a hobby that takes significant upfront investment unlike netflix and hulu for example.