As far as I can understand, Hans Rawat did not find a way to make a business out of his vocation because there was no separation, no concept that these were two different things and there was no idea that it can be "turned into a family business" because that was just part of being a guru in that tradition or it wasn't if you didn't have a family.
Prem actually talks about his childhood as being very controlled, very fearful and that there was a disconnection between his family life and his public role. But by coming to the West, he could escape those family expectations and the discipline of the role he would have to accept in India.
Young Prem didn't try to cross red line after red line, he was scared and obedient but he secretly cheated at school praying his parents wouldn't find out.
Hans Rawat grew up in a traditional Indian society, Prem was becoming aware of life out of India in the 1960s and wanted the consumerism and materialism that his early followers thought they wanted to reject.
He was lucky. He fell into a group of enablers who expected he could do whatever he wanted and they'd do it too while basking in the glow of being the inner circle of the in crowd and living off the earnings of those who took the spiel seriously.
