The thing is that non-technical people aren't using those features on windows/linux desktops even if it is possible to do them, whereas they are using them for

The thing is that non-technical people aren't using those features on windows/linux desktops even if it is possible to do them, whereas they are using them for macOS and iOS It's the barrier to entry and knowledge. I agree for tab sync but for most things it takes a degree of setup and also knowing that the feature even exists to set things up, but even casual Apple users seem to know about and use these features