Pretty sure some of that is because of Apple's enforced code signing? I had some games that used to run on OS X, but later added content/patches/expansions just

Pretty sure some of that is because of Apple's enforced code signing? I had some games that used to run on OS X, but later added content/patches/expansions just never came to OS X because the devs didn't want to bother jumping through the hoops needed. That was even before the ARM transition.