That's somewhat my line of thinking, that's why I have them as "regulars" but they said that most of their "regulars" looked for those things they mentioned: an escort who is able to be a good top, or a masseur who is a great oralist. Unless that, what they meant is that they provide those things in a magnificent way and that's what allows them to build up a loyal group of clients.
Not sure if these kids just wanted to make a point about a subjective belief, or they just don't have enough life experiences to know better. I must confess, however, that I mostly look at them for the "turn and burn" in certain ways. I have had "regulars" for quite some time but then I found others that engaged me, hence replacing them for another long time, until others came up, and so on.
I guess you could call it "a love for long-term diversity".