It's worth noting here that part of the problem is that the web is ideologically hostile to anything native. Consider: people complain a lot about Electron app

It's worth noting here that part of the problem is that the web is ideologically hostile to anything native. Consider: people complain a lot about Electron app bloat. Why can't Slack optimize a bit? Well, they have a lot of Mac users. One obvious way to optimize would be to incrementally port the most performance sensitive parts of their app to use AppKit so Apple's highly hardware-optimized UI toolkit handles those parts, and Electron handles the rest. Problem: doesn't work. You can't embed an NSView into a Chrome renderer. This was once possible using the Netscape plugin API, but it was removed many moons ago and now you have to use HTML for everything. Electron is popular, plugins were popular, and Chrome could add these capabilities back and even do them better, but they don't because if your app is pure HTML then this maximally empowers the Chrome team. They can do lots of stuff to your app, and add value in various ways, and if the price of this is less efficiency or that some features become less consistent or even harder to implement then this is a sacrifice they are willing to make. The result is that a lot of these discussions go circular and just become moanfests, because the ideological constraints of the platforms are taken as unarticulated givens: immovable objects that are practically laws of nature rather than things that can be changed. There is no specific technical reason why you can't have apps that start out as web apps but incrementally become native Mac or Windows apps as user demand justifies it, it's just not how we do things around here.