From my very limited understanding of these things, some of the best-looking guys would already have been kept by a sugar daddy or mummy and working in the bars is only a side income. And different customers have different expectations; some I think are quite contented to just worship a hot muscular dude with little or no reciprocation. The guys may also perform differently with different customers depending on gender; level of attraction, perceived wealth and stupidity, etc. And because they are hot and and the turnover of customers is very high, they don't really care about repeat offs or building a reputation; there's always a new customer the next day or more likely, the next hour. I can't remember the term for it in economics but it has something to do with providing a unique commodity with a fixed supply and an unlimited demand. It's a seller's market.