I think we'll also see an influx of great Mac apps as lots of engineering talent is currently trained to use UIKit (iOS).
I'm thinking things like a FB Messenger desktop app - certainly a lot easier to implement.
And hopefully even move some players away from the ever-popular not-quite-native desktop apps (looking at you, Slack and Spotify) towards more actually-native UIs.
That’s the dream, but I’m not optimistic. More than likely they’ll just add another target to their Electron/React app and call it a day.