Yeah sure native apps will die as soon as HTML5 can do a, b and c. Oh and also x and y and z.<p>Web apps are great for many things but they haven't killed native on the desktop. They seem even less likely to do so on mobile.
The "app store" was a shim, something put in place because webapps as Google and other invisioned them were not ready, for many reasons. They came to power with a single unified store when there was only one large market iOS. Much like when Windows had sole dominance people made apps for Windows that was were the money was. I can only think that nightmare of porting to all these app stores will push developers into a new model the web app. The real issue is monetizing web apps in a easy convenient tractionless form. Ads can not be the future for all software, can it?