It's sort of an often-told sad tale of a band dumping the person who greatly contributed to making them successful so they don't have to pay him.
You gotta take your shot if you don't want to pay what you owe.
As soon as he made them superstars they decided to stop paying him. He's entitled to a percentage of their income for his services as a manager and a producer.
As soon as he made them superstars, they decided to stop paying him.