But people do stop believing money has value, or more specifically, their trust in the value of money can go down - you all over the History in plenty of places that people’s trust in the value of money can break down.

As somebody pointed out, if one person has all the money and nobody else has money, money has no value, so it’s logical to expect that between were we are now and that imaginary extreme point there will be a balance in the distribution of wealth were most people do lose trust in the value of money and the “wealth” anchored on merelly that value stops being deemed wealth.