Except none of these players are making cover songs. It isn’t fair use within a video game. They don’t want to end up paying royalties to another company. The law is very vague and needs a lot of technological updates. Until then, companies have to protect themselves from lawsuits. All it takes is one major player like Taylor Swift coming in and saying “You’re using my song within your game” and it is over for SE. Best not to poke the music giants.