It sounds like what you want is for him to change. That's what I wanted, too. Through Al Anon, therapy and our family doctor, I learned I can't get another person to change. I learned to look at reality and, as an adult, accept it.
Only you can decide whether to put your brother out. Accepting that if you do not means you will suffer the financial consequences is your CHOICE.
Please keep posting - it helps a lot.
((( )))