Look at a sophisticated web app, like Google Docs. This has a menu bar, which is a bad copy of the native Mac menu bar. Web apps are copying native app conventions, to try to be more familiar. But they're also eroding those conventions.
Eventually only click and swipe will be left. And this problem is not going to be solved by Web MIDI or whatever.
I can’t say I agree with this. There are a ton of MacOs apps that implement fully custom GUI (first one that comes to mind is Jira native Mac app which looks nothing like a Mac app I’ve seen before)
I agree web apps are likely eroding OS conventions though. The Jira app is an example of that (they decided to make their native app look and behave the same as the Jira Web App instead of using standard MacOS GUI conventions.
It’s a tough trade off.
These apps are frustrating for someone accustomed to the Mac UI. Basic interactions (like context menus) don't work at all, or work in unexpected ways. I have no idea what these apps can do because they all have a unique UI vocabulary. So I don't try.
I think Apple has really dropped the ball on this. They ought to have spotted and embraced the web's great strengths early. Ephemeral, zero-install apps, using native components - that's the platform I want. Though I understand how others may disagree.
One thing is the revenue generated by the App Store but suppose JavaScript web apps were just as powerful and well integrated as native apps; then why use native apps at all? Why have an App Store at all? Why have a Mac or an iPhone if any device with a modern web browser would do?
When Huawei tried to create their alternative to Android. The big thing missing wasn't the hardware or the operation system. It was the App Store with your map app, your banking app, your scooter app and so on.
The App Store and the proprietary development platforms for Android and Apple has become a way to keep their duopoly in place.