Microsoft's long list of dead ends
For years the world was only allowed to use VB, the web forms came along, then WPF, then something else. WPF had some nice ideas but was one of the reasons why Vista was such a resource hog: would have been easier to go with DisplayPostscript but Microsoft doesn't paying licences (though it expects others to pay), which is why the world gets one shitty knock-off typeface (Arial, Verdana, …) after another.
Leaves two choices: QT, which just works and something like Flutter, where Google does at least ensure the web components do work.