They do need to make money. How would you have them do it? My preference is a markup on the cost of validating alleged attributes. If you claim to be 6'2" tall

They do need to make money. How would you have them do it? My preference is a markup on the cost of validating alleged attributes. If you claim to be 6'2" tall, that might be validated with a notarized statement from a doctor. If you claim to have a degree, that can be checked via the usual electronic clearinghouse non-profit that universities use. If you claim to own property, county records can be checked. All this costs money. Apply a markup, and that gives a profit that will seem reasonably fair to most people. Another way is to sell the obvious products, ranging from condoms to wedding rings.