We are viewing the analogy differently: a millionaire doesn't drink meaningfully more coffee1 than a normal person (perhaps better coffee) but can pay more for

We are viewing the analogy differently: a millionaire doesn't drink meaningfully more coffee1 than a normal person (perhaps better coffee) but can pay more for it, paralleling the housing needs/wants of a ""tech bro"" and a teacher. To use your version, the problem is that the coffee shops aren't allowed to make more coffee. If they could they would continue to do so (because money), at the point where they make the most total profit (not margin!) which occurs with an increase in supply. Since they now have more demand, fixed costs drop to a lower percentage and your millionaire drives down the cost of lattes, not up. Or does your neighborhood millionaire drink so much as to disrupt the global coffee bean + brewing equipment supply market?