That Chinese corporations traditionally don’t care much for IP law. I doubt that there would be any way to even target their operation in western countries.

There are many sanctions a court could impose. Including forcing Apple & Google to remove the app from their stores.

It will never get that far. It will be settled.

If this is just a snippet copied then I assume the settlement will be “oops, the beta contained a class with code but we removed it” (I.e anonymized the code).

If it’s more substantial use of the OBS code then I guess it could be more involved. My money is on that there won’t even be a legal process.