well he probably did take his own life due to male pattern baldness.
even if you have millions of dollars, hiring a hooker still wouldn't make me happy as i would know the girl is only in it for the cash = any sexual satisfaction i might get is completely gone knowing she isn't into it. if you are that selfish that you only care about your own pleasure, you probably wouldn't care too much about male pattern baldness either.
he probably thought "what good is all this cash, i can't put it on top of my head" maybe he thinks hair transplant's are just like the old plug days (a lot of people round me think hair transplant's are a joke and that you'll get the greasy 80's plug look); he knew he couldn't wear a wig because someone with that fame and lifestyle would be exposed very quickly, and he couldn't picture himself in a club as a NW6 when everyone else there is youthful.
myself, i would have just retired and lived a quiet life of seclusion, not having to work. (ofc i'd spent a lot of that money on FUE megasessions too)