Originally Posted by Shikamaru
1) There's quite a few billionaires living in Gotham. Every major metropolitan city has their fair share of billionaires.
2) Yes, you would start investigating the richest people. But then you would find no solid evidence on Bruce Wayne and you would move on to the next guy.
For the sake of argument, I ask people to imagine that such a vigilante started showing up on the news. Then I ask who they would assume was under the mask? People would think: ex-soldier, ex-cop, former bounty hunter, ex-private investigator, ex-bouncer, etc. It wouldn't be the money that people would suspect, it would be the personality. Even if a billionaire was in shape, the Donald Trump/Steve Jobs types just wouldn't register.