Yep exactly, and that was why the Symbian Alliance formed. It was to prevent microsoft from doing what they did to the PC world. This is also one of the reasons ARM thrived instead of Intel.
The other lesson that is still being battled is patents, Internet protocol is essentially free. Wireless is not.
The other main difference is carriers, they are the gatekeepers to the valuable, yet resource limited spectrum that mobile phones need and therefore have a much larger control over the value chain than ISPs do for the Wired Internet.