If you switch completely to native mobile applications you disappear from the web. That's a lot of people and a lot of incoming links. Mobile apps are less discoverable and they put the install time between "I want to see this" and "I can see this". Sites are trying hard to shave ms from the home page loading time, go figure how well it fits into the picture the minute it takes to decide to download something and get it installed. I think they'll go for a two pronged approach: traditional web site with content plus a mobile app (actually at least two of them). Furthermore, my phone can display an infinite amount of web sites but it can store only a not so large number of apps. And it doesn't have anything as convenient as start typing the name of a site to have the browser display the right url, inner pages included.