The regular update cadence and the lack of stability for developers sets an expectation that developers must be active (forever) or their product will stop working.
That way, they never have to deal with fallout from breaking a 20 year old program like Microsoft got for breaking whatever version of GTA. There's no way a 20 year old program still runs on current macos, so nothing to worry about.
I worked on some Mac security software. WWDC and that first macOS beta in June dictated whether we were going to spend the summer on features, or on compatibility with the new platform. There were a few crazy years, like file protection in Mojave, system extensions in Catalina, and Apple Silicon and other changes in Big Sur. Not to mention yearly device management changes and UI changes like dark mode, completely reworking the menu bar icon, etc.
The Windows team never faced anything like this. Not only did Windows change slowly and with backward compatibility, but the users didn't upgrade right away, even if they were buying brand new laptops. But in the Mac world, a laptop bought in September/October is going to have the new macOS on it no matter what.
That way, they never have to deal with fallout from breaking a 20 year old program like Microsoft got for breaking whatever version of GTA. There's no way a 20 year old program still runs on current macos, so nothing to worry about.