I wonder how long this will last. All you need is one malicious app and the party will be over. If not Google, then the carriers themselves will demand the locking up of the store... all in the name of security.
And Blackberry, Windows Mobile, and Palm devices (and PCs) allow users to install arbitrary applications that they get off the internet, and their world has not collapsed yet. The Android Market might even be considered an improvement over these software ecosystems because it provides a de facto central location for flagging problem apps.
AAPL is positioned to be a barrier from the headaches of open computing. And that's what I love about them.
If Apple or Microsoft tried to pull this shit on the desktop they would be massacred. I would stop using OS X immediately.
And you have heard about OpenMoko, right?