It's true the distinction between networked native apps and networked browser apps is logically arbitrary; but the practical distinction is that the web is an open standard, cross platform, widely adopted, whereas Apple's native apps are tightly integrated with the device, giving them faster response and a better managed user experience. If iOS is everywhere, then you get the best of both worlds.
Can Apple topple the web? If they are better at providing what users want, yes.
It's true the distinction between networked native apps and networked browser apps is logically arbitrary; but the practical distinction is that the web is an open standard, cross platform, widely adopted, whereas Apple's native apps are tightly integrated with the device, giving them faster response and a better managed user experience. If iOS is everywhere, then you get the best of both worlds.
Can Apple topple the web? If they are better at providing what users want, yes.