Koreans are a tough and stubborn people, but even the strongest has weakness. If global media and even the damn UN put spotlight on the mistreatment of Kpop idols especially minors, Korea would pass stricter laws faster than I can change my sockets.
If the global media can pressure Japan to improve on their labour laws after discovering foreign workers gets mistreated when working on the Tokyo Olympic, then the same can definately happen to the Kpop industry as well.