So come to Europe. Plenty of WPF jobs here.
Not everyone is using Citrix, and there are many markets, like life sciences, ticketing systems, factory management and many other domains, using non networked devices with native UIs in WPF.
Of course MS is not supporting WPF on .NET Core, they already announced XAML Standard and Xamarin.Forms is going to support Linux and macOS as well.
Also they have big UI announcement planned for BUILD as discussed on .NET Rocks interview with Scott Hunter.
The writing is on the wall - not even MS is falling over itself to support WPF in .Net Core.