The difference is: Microsoft never forced, they just nudged users very aggressively. They got into trouble for that multiple times and needed to adjust their practices (but keep trying). For some reason, nothing ever happened to Apple (yet). In my opinion, tech media is way too lenient on this as well.

This is not just bad because of privacy, Safari has been slowing down progress on many web apis for years. Other browser implementations would also probably be faster and/or drain less battery. I could probably come up with even more reasons.