re: #4 prononymous

The availability of apps and attractiveness to developers depends in large part on the OS rather than any specific device using it.

I am not so sure about that. If I were developing an app for mobile phones I would want to develop it for what will be the largest market… in the future. You would not invest your hard earned money developing a product for a smaller market (number of handsets that can use your app). You would want to try and look out and invest your time and money in an app that ran on a platform that had the highest number of possible customers. You would also be thinking a year out….