By Jay Frank of FutureHit.DNA. In the great streaming royalty debate, the focus has been on tiny royalty rates per stream. Artists are up in arms, many are opting out of streaming services, and the noise and debate has been growing louder. Lost in that noise is a voice that is seldom heard: that of the record companies. There’s good reason for that: they’re making more money from streaming and the future looks extremely bright for them. Buried in the Christmas Eve edition of the Wall Street Journal (which is itself a day to bury news) is a short column...