Well, it's also that the "web app" push only ever concerns itself with features never with performance. You'll frequently see things like "native apps can do X

Well, it's also that the "web app" push only ever concerns itself with features never with performance. You'll frequently see things like "native apps can do X, so the browser should, too" where X is camera, opengl, files, etc... Not necessarily wrong, but you basically never see anyone pushing the boundaries of performance. I can run games at native resolution in excess of 100fps all day long, but I can't scroll a fucking web page at 60fps? And the round-trip communication with a webworker, the only mechanism whatsoever to leverage the other 75-95% of the system's CPU, is measured in 100s of microseconds to milliseconds? Being an app platform isn't just features, it's also getting the fundamentals to perform well. And the web just... doesn't.