This clearly isn't true, since if you dress and make a rich person smell homeless, they simply won't be trusted in most parts of civilization.
No, what you're talking about is POWER and AGENCY. Rich people have the power to override trust through the fact that they can operate with near impunity; so you have very little agency to not trust them. If you choose to not show trust, you may invoke their wrath.
yet rich ppl are granted more upfront trust. maybe because we assume less incentive to rob.