>Windows 10 can run virtually all apps compiled against Windows 2000 just fine, and those apps did not have to bundle their own graphical toolkits.
They do if they're buildtusing Qt, GTK, WxWidgets, etc. Also shipping DirectX and VC++ runtime libraries, .NET runtimes, etc. was and still is (for whatever reason) still common and stuff just doesn't work without it. Plus whatever else the program needs, like a whole python runtime or something.
>Is it any wonder that no one can ship and maintain a binary app that targets GTK without bundling it?
Distributions have no problem doing it. If you're shipping something outside the distribution why would you ever expect that shipping only half your program would be feasible? There is no OS where that works.
They do if they're buildtusing Qt, GTK, WxWidgets, etc. Also shipping DirectX and VC++ runtime libraries, .NET runtimes, etc. was and still is (for whatever reason) still common and stuff just doesn't work without it. Plus whatever else the program needs, like a whole python runtime or something.
>Is it any wonder that no one can ship and maintain a binary app that targets GTK without bundling it?
Distributions have no problem doing it. If you're shipping something outside the distribution why would you ever expect that shipping only half your program would be feasible? There is no OS where that works.