Many entertainers, performers, or whatever past and present came from poor to impoverished backgrounds. This was highly true of those who were around for Great Depression and parents or whoever got them into "show business" to shore up family fortunes.
Whatever the reasons these people find themselves with newly found wealth but with nearly zero financial background or education. Thus they are ripe to be fleeced by family, friends, and so called "professionals", the latter who are supposed to be helping them of all things.
Other thing is something that happens to even those with inherited or other wealth; they spend as if the money will always keep coming in, but that doesn't always happen. Example would be members of Vanderbilt family who pissed their fortunes away on homes and shit to fill them up with, only to find their fortunes weren't totally unlimited.
POC sadly are worse for this on several fronts.
First and foremost back in day they were horribly abused by managers, record or film company execs, etc... Many signed away rights to their work for pennies without understanding contracts. Others were simply paid less for their work simply because they were black and no one was there to have their backs.
There is a general accepted psychology that persons who grow up poor (comparatively or actually) tend as adults to vastly spend money with abandon as adults. This even if only middle class or slightly higher.
You see this with those who suffering from "hoarding" complex. They buy tons of shit for no other reason than a deep down fear of not having money again. Jackie Kennedy Onassis was famous for this, to point her last husband (Onassis) got fed up and was one reason he was looking to divorce .
Look at all the NBA and NFL players who have huge homes (sometimes more than one), and other "bling". When times get rough they have to unload all that shit that brings in far less than they would like.
Finally by far the most recurring theme in all this is Internal Revenue Service. Federal government doesn't give a rat's behind who did what to whom. If you sign tax returns *you* are responsible for accuracy and are on hook for any unpaid sums.