The biggest problem with android is piracy. I don't know how much Sony can do about it since Google is in the driver seat. I suppose they could devise some system to try to prevent piracy, but the android hackers seem to be very good. There is some risk when you put your software into the android marketplace. I'm not saying that can't be overcome, but so far nothing I've seen changes the status quo.

Anyone can guess. It takes no effort to throw out lots of predictions and have some of them be correct. You are not and wiser or better for having your guesses be right. Even a blind man can hit the bullseye.