You are eliding the difference between selling a lot of devices and selling a lot of apps. I notice this ecosystem over here that's running on Objective-C that

You are eliding the difference between selling a lot of devices and selling a lot of apps. I notice this ecosystem over here that's running on Objective-C that's doing a very good job of selling apps and directing money towards developers. Android is certainly going to help Java remain relevant, but this is another example of how it isn't highly compatible with the entrepreneurial mindset. The Android app ecosystem isn't as good at rewarding independent app developers as the iOS app ecosystem is. So people who, in entrepreneurial fashion, want to be judged by the market, will probably make iOS apps because that's where the money is. I argue that that'll produce a 'brain drain' away from Java - Java will be the language a day job makes you use, and something else will be the language you use for projects that you care about. The projects that people care about, in the long run, are far higher-quality code than the projects that they only do for a paycheck.