Apple was pushing for "apps" to be web apps when they first released the iPhone as well [1], with Steve Jobs going as far as to say that native apps would potentially "damage the phone system". It wasn't until after the iphone was jailbroken, and people kept insisting on more powerful development choices that they started on their app store. People have been saying that webapps are the future for a decade now. At this point, I have to say it's never going to happen.
[1] http://www.apple.com/pr/library/2007/06/11iPhone-to-Support-...