From what I have seen and read, no and he didn't seem to dwell on it much.

But he did do some touring after the documentary and I imagine he received profits from that...or at least I hope so as it was a good show and I enjoy listening to my copy of 'Cold Fact' [1]

1. https://en.wikipedia.org/wiki/Cold_Fact

RIP indeed. He was a poet and I still get chills sometimes while listening to his music / words.

There's a part in the documentary where they're interviewing the record label owner and when they ask him about it he immediately flips out and ends the interview.