They say MTV saved the music business. One could argue quite strongly it killed it. As for the excoriated disco that killed rock… We now know that corporate rock deserved to die and that it’s disco that survives. Yes, all the beats of EDM started in disco. Disco was made by a marginalized group who lived to party every day. And punk and new wave were experimental and vital sub-genres of rock that rebelled against what came before. But everyone in the game knew you could get rich if you had a hit. Even Johnny Rotten.