I came across this story, and thought it was worth linking as a cautionary tale
There have been a lot of questions on another site I am on about making money from Fanfiction, and after reading this story – the guy was forced to pay $134,000 in damages and destroy all his work – I think that we have a more or less definitive answer.
And the definitive answer is no – it is not worth trying to make money from fanfiction :)
Do you think they’re actively tracking the amount of money? Patreon has become very popular for early access, as well as Ko-Fi with goals before posting content. Maybe Team HP acknowledges that fanfic keeps the Fandom alive, but draws the line at printed books?
I can’t recall what drama happened with Manacled.