What you're saying is that a company wants you to use their product and no one else's. Sure, that's how companies work. They aren't compelled to allow anyone from the outside to contribute. This is not closing us in. Unless I'm missing something, people are still able to choose the applications they install and use on their mobile phones, and I don't see that as a lock-in in the slightest. I understand the internal changes that have happened over the years at Google, but to say that Google no longer supports or does not plan to support openness or interoperability is either the word of a prophet or Google Reader-inspired sensationalism.