What's more likely (as others have said) is that the other thousand companies that can't afford to have dedicated staff would've just used React Native. So no jobs were lost, they weren't there in the first place. The places that have dedicated Swift/Java devs can now be more ambitious in what they build.

That's fairly rare. Most companies would use a compatibility layer instead.

Really? I’ve worked with plenty of companies that had separate native iOS & Android teams. I don’t know any that use a compatibility layer. Unless by compatibility layer, you mean a web view.