We can. Whenever I see "Would you like to install our app? Y/n", my answer has been Ctrl-w to close the tab. This strategy has worked flawlessly for years. It can work for you, too.
May I suggest the additional step of an /etc/hosts file entry for the site in question. I recommend '0.0.0.0'.
Just give it a few years (like five or ten), it'll come back to the web.
I think the APP-cycle will end and new Web 3.0 will be the new craze.
The web is Googles walled garden. Both Facebook and Apple realized this so made their own walled gardens to prevent Google taking over
Yes, just need a way of letting companies innovate on the web of pigeonholing into crappy HTML5 and JS. Maybe make PNaCl more mainstream.