I understand Lars' and your point, that the web in in danger from mobile apps, but I don't buy that. Always bet on the web It's not going anywhere.
The world pretty much settled on HTML as the language to display text. As much as some here want, XAML will not do. I see no other text engine taking over from the browser. So at least for text, the browser is here to stay, even if it's embedded in a control within a native app.