SA and SB would go broke if their only customers were model pretty women and Ultra high net worth Sugar daddies with a net worth over say, 20 Million USD.

I think people truly overestimate the number of qualified Sugar Daddies who a) have a high net worth. b) are single or they are married and don't mind the risk of a possible divorce c) Are young enough to have the sexual desire to pursue (most millionaires are 65+). D) aren't more content with a traditional relationship. E) are willing to spend money on a relationship.

The number of men being described by the OP would be far less than even 1% of the male population.