Personally, I think it makes total sense to keep some things locked down. How else do you make your product stand out from someone elses?

If someone made a Linux distro and decided to not allow open use of their theme/GUI, how is that bad? The underlying OS and backend is still open, its just the GUI that may not be. I do not see that as bad at all.

At the end of the day, Nokia are not going to want a competitor to release a competing device using the exact same interface. They need to retain a little control so that you only get that true experience on a Nokia branded device. That's just business sense.

Why spend a ton of money doing something that your competitors can then rip off for free?

If you want a totally open platform, then YOU are going to have to create it. The only fully community driven devices that are out there are really niche devices and never hit mainstream plus are often usability nightmares. THAT is why you need a commercial company to step in and set some ground rules, pump some money into the project and that naturally results in it being slightly less open, but with much more usability and mass market appeal.