I don't know how it was historically. But I got this typical thing where I think more software and gear will make me a better producer and thus I buy almost every big daw, software synth and all plugins I come across and have yet to find the first thing that doesn't run on windows (apart from logic pro obviously)
A lot of small-shop semi-DIY VSTs used to be Windows only. That's not so true these days. It's been a while since I found a VST/AU that wasn't at least dual platform.
But having run music on Windows for a long time, I would never ever go back. The telemetry, random updates, and general awfulness of the user experience are not something I want in my life.
MacOS has issues, not least the breaking changes in Catalina and Big Sur. But when each OS iteration settles down it's generally super-stable and - most importantly for professional use - it doesn't get in the way.
MainStage doesn't run on Windows, and it's the software all the shows use. Even shows that use Ableton Live for playback sometimes use MainStage as a frontend software controller hooked up via IAC.
