No one could use it since trying to release a commercial product using their engine would get the company sued in oblivion. Maybe some Chinese company that doesn't give a fuck about selling it outside of China would do it, but no existing studio would touch it. The only other reason I can think of for someone to buy it is to try to see if there's a way to backdoor some kind of malware into the game so that it spies on you or mines crypto currencies on the GPU while the game is running.