GPL3 or GPL2? After what github did with copilot, Chinese companies that don’t release source code, or western companies that do the same I don’t see any ways t

GPL3 or GPL2? After what github did with copilot, Chinese companies that don’t release source code, or western companies that do the same I don’t see any ways to enforce them, you just need to trust the authors or the users. Has there been a landmark case that solidifies any of this? Chinese companies don’t follow US IP either so I find it hard to believe they can do anything.