> It will come from something unexpected that solves a different problem, but in a much simpler and more elegant way, and over time it will be the thin edge of the wedge where it evolves and develops into a web killer.
So.. app stores?
It has already begun. The most popular webapps (Facebook, Twitter etc.) already have native clients in Android and iOS. I believe the majority of people already prefer and use the native FB/Twitter apps more often than accessing the FB/Twitter websites. So it's already obvious that native apps must be more convenient.
Right now however, app stores are a little clumsier to navigate compared to browsers.
For webapps:
• you have to open the browser,
• type in the address OR
• use a web search if you don't know the exact address.
But for apps:
• you have to open the app store,
• search for the app,
• potentially filter through unofficial third-party software,
• download the app, possibly after entering your credentials,
• navigate to the app icon,
• authorize any security permissions on startup (in the case of Android or badly-designed iOS apps.)
We just need the Big Three (Apple/Google/Microsoft) to actively acknowledge that app stores can supplant the-web-as-application-platform, and remove some of those hurdles.
Ideally an app store would be akin to searching for a website on Google.com (or duckduckgo.com) with a maximum of one extra click or tap between you and the app.
Apps should also be incrementally downloadable so they're immediately available for use just like a website, and Apple already has begun taking steps toward that with App Thinning.
Ultimately there's no reason why the OS and native apps shouldn't behave just like a web browser, because if web browsers keep advancing and evolving they WILL eventually become the OS, and the end result will be the same to what I'm suggesting anyway.
Currently though, both the native OS side and the web side exist in a state of neither-here-nor-there, considering how most people actually use their devices.