someone who expected to inherit money and didn't

by Andrew
(Japan)

My brother is now almost a senior citizen. He was brought up in a wealthy environment, went to a fancy college in NY and his friends became doctors and therapists. He wanted to go the art route. In my opinion he didn't really have the chops for that. He did have a bit of success writing music for some tv dramas and may still be collecting some royalties. He lived in my sister's home for the last 6 years and did not pay rent after being evicted from Soho in NYC. He does some translation work. He blames my father for spending his money and not leaving any for him. He thinks he is entitled to have inherited money and says that all his friends did. I feel this is a terrible attitude. He is very argumentative and willing to waste a lot of time arguing. What can I do besides not talking to him?