[bmitc]

It isn't about whether it is open source or not. It's about what will be their stance on GUIs in a year or two and whether the projects of today are abandonded or not. Windows Forms, Silverlight, WPF, UWP, WinUI, Blazor, and then Xamarin Forms and MAUI, and then the third party ones like Avalonia and Uno Platform.

It's insane because actually all anyone wants is Windows Forms and WPF. If Microsoft made a cross-platform version of Windows Forms and WPF, they would be the cross-platform frameworks, at least for desktop.

[ygra]

If you want cross-platform WPF, there is Avalonia. For many normal-ish applications you basically change a few namespaces and that should be bulk of the work to migrate.

I do wonder sometimes whether MS should just pick it up as a default-endorsed desktop UI toolkit for .NET, but I guess rivalries, internal turf wars and other priorities make that difficult.