I don’t think any UI framework with a license more restrictive or complicated than full on MIT/BSD is going to be able to compete toe to toe with Electron. It doesn’t matter what the price tag is, if it has one it’s going to lose in a shootout between the two.

The only exception I can imagine is maybe a framework that uses the Unreal model, where it’s free to use under USD$1m/year in revenue and beyond that requires only a modest fee.