Making desktop applications has become a nightmare in anything but C or C# and that isn't exactly a language people really want to be programming in these days. That is a big part of the problem there aren't good GUI bindings for a lot of languages and most programmers nowadays have been building websites and working with GUI APIs is a huge step back.

Everyone is preferring server/web solutions now as its easier to charge customers for it and keep it up to date and the knock on consequence is desktop app support isn't great or considered important.