There is a big portion of people who declare their income publicly and nobody robs them based on this information. Robbers don't work that way, instead they try to find out and target who has unprotected stuff - unlocked home, locked home with owners on vacation (targeted by spotter), open car, car on unguarded parking with known vulnerability etc. etc.

There are tens of thousands very rich people in any country and nobody robs them specifically, despite only several percent of them using active guards or security. They are robbed with the same chance as anyone else.