If there was an obvious reason, it would have been solved long ago. It's probably a collection of messy issues in software from all layers of the typical Linux

If there was an obvious reason, it would have been solved long ago. It's probably a collection of messy issues in software from all layers of the typical Linux desktop stack. It's solvable for sure, but requires the manpower equivalent of what apple has working on Macos. Linux companies typically have other low hanging fruits to focus their efforts on.