It would be, but this is the opposite because competition is not on equal grounds. Preinstalls are hugely important, defaults are important and even if your software is better than the manufacturer's, it will not be preinstalled and you will have less access to system functions and your software might break on OS upgrades.

See any sherlocked app, e.g. sidecar, continuity cam,... and antitrust law suits.

I guess that is a cool feature. I generally can't see my multicam live previews because I'm doing both the recording and being in the scene.

A bonus of davinci resolve is that it runs on Mac, Windows, and Linux.