Native apps can take advantage of OS APIs that are much richer than those via the browser (or Electron) pass-through APIs.

For example, I've made a Mac app that lets you customize your Spaces (virtual desktops), assign names to them, jump to specific ones, track your time spent across them, and trigger custom events when you move to specific ones. None of this would be possible via a web app or electron app. Project homepage https://www.currentkey.com, app link: https://apps.apple.com/app/apple-store/id1456226992?pt=11998...

And as long as there is differentiated hardware between platforms, there will be opportunities for innovative native apps. For example, though I personally don't love the Touch Bar, there are interesting native app projects around that like Pock: https://github.com/pigigaldi/Pock