You are getting it wrong OP. Michael Jackson didn't die poor despite the debt that he is owing. Michael Jackson has a multi million dollar estate which he built and up till date, that property is still generating massive income which his three kids are getting their own share from that investment based on the percentage given to them. Michael Jackson asset that he left enough to take of his children and their children children.
You are right @Sim_card because OP thought very wrong about the Michael Jackson situation because right from when he was alive singing he has never been poor and even after death his wealth are still there, perhaps aside from this estate there could even be more of his assets that is helping in generating more to the family in addition to the estate, so actually if Michael Jackson family had became poor after he passed there wouldn't be any of his estate left, so actually he did not passed away like the others he stated because his wealth is still there.