Qt exists and is really nice to work with. It has multiple language bindings. How is it unfeasible?
- using Electron: 1 month
- using QT: 2 years
(by reusing the chrome context, your memory usage wouldn't grow unnecessarily for each new slack/spotify/whatever you open).
To push Chrome OS (where they will still be available) and to vendor lock-in people with Android apps.
Progressive Web Apps is where it's at.
Not many of them are good though, as it's hard to bind C++.
If you want to work with Qt, C++ is really the best option. And not many people know that language well enough. They know JavaScript though ;)