Ogg isn't a free as you'd believe
A number of people have brought up, why hasn’t Apple included Ogg Theora into iTunes and other iDevices. The main reason is patents. Ogg Theora claims no patents, however as i read in Daring Fireball’s article on GIF, H.264 and Patents, an interview with a member of MPEG LA says otherwise. While it maybe no different from Microsoft’s claim that Linux violates Windows patents, no major company has really it a priority to support it. Rio once did on older devices, but has since felt the time and money spent wasn’t worth the cost. I can’t even recall any major device that plays Ogg without the help of something like Rockbox