Running desktop programs on your phone requires some tweaking to work.

I‘m curious to see how Ubuntu Touch addresses this. Nowadays smartphones are just normal computers, so you have to wonder whether the historic restrictions of Android and iOS are still relevant. I‘m inclined to see it as a user-interface problem only (small screen, touch vs click), which is a fully solved problem on web, with responsive layouts. Not sure what happened to Windows, but that’s also quite old and maybe it was just not well designed.