Of course buying a movie on itunes means you can only watch it on capable devices. You can't play a youtube video on a VHS player either.
Why can’t I get the file and put it on another device? Why can’t I burn it to a dvd? It makes sense that Apple aren’t required to make more software for random devices, but why can’t I have the file and do what I want with it?
Also, IIRC, there was a period where you could burn Audio CDs from music that you purchased on iTunes.
edit: turns out music purchased on iTunes is DRM-free!
Music purchased on iTunes is DRM-free, so you can definitely burn CDs with them.
Why?