Mostly agreed... I'd love to see MS just ditch MAUI and/or otherwise buy out UNO or Avalonia and create a cross-platform XAML based UI library that works everywhere (including Linux). As far as Linux goes, they could just go with Gnome/GTK for underlying support... not sure if QT's license would be compatible at this point, MS mostly uses MIT for modern FLOSS.

Bonus points if it worked with C, C++ and Rust for those that want it in addition to .Net (C#).

I honestly think there's still too many old guard managers/exec at Microsoft to let that legitimately happen though. They're too busy trying to wrangle every last penny of value out of every Windows user along the way.