You don't know a lot of things so shut up. You immediately think that he is some whiny idiot that wastes all his money in BS and wants to be paid 3 million dollars per fight.
1) Taxes take a lot of money.
2) Training camps of such a high level are not cheap at all. He has to pay his trainers and his sparring partners.
Also, he has to pay for the plane tickets of his cornermen (And I don't know if also their hotel room)
3) An athlete of that level needs a good diet and a lot of supplements.
Food and specially supplements, are not cheap at all.
4) You have never thought of the possibility that he may also spend a lot of money on members of his family?
5) 14 months without any income really sucks. I definitely prefer to get 20,000 every month rather than getting 260,000 and then not getting anything else during 14 months.