Here's a good example: I used Weylus which turns any touch device (phone, tablet etc) into a drawing tablet + screen mirror. It can be used to turn your iPad in

Here's a good example: I used Weylus which turns any touch device (phone, tablet etc) into a drawing tablet + screen mirror. It can be used to turn your iPad into a second monitor or as a touch device for your laptop. Weylus gives you a URL that you can visit on the device and instantly use it. Try doing that with native apps. They'd need native apps for Windows, Linux, Mac, iOS, Android... get them on the app stores too, support all the different Linux distros... or just a single URL that works instantly anywhere. Steam works for the same reason the App Store works, it targets mostly a single platform (Windows) and all dependencies are bundled in. The Steam client itself is a web app running on the chrome engine, though.