Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Other way round, please: If Apple does not care to open macOS to non-Apple hardware, then don't buy Apple.
For me, I use Intel Macbooks. With windows.

As I said, I use Garmin and Apple nor Google do anything in particular to support watches that aren't their own. But it works great with either. And that's due to Garmin's efforts and that's why I buy their stuff.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.