I see this all the time, but it takes on different lives from girl to girl or spa to spa.
At one I go to at least once sometimes twice a week every week since they opened, was her first customer when it was just her and a covid mask and a creaky old table I tightened up for her, then loosened
at this one, all three girls know I enjoy them all, and don't play favorites. The girl who runs the place who I was with first, initially was possessive, but of course her "manager" role took her mind, and she realized that I will come there without appointment, and because I like all the girls, will enjoy taking the draw. So now whichever girls are not working, usually I arrive at very end of night so they mostly are all available, they come up and hug and kiss and all the other, it used to be they made me pick, like a lineup, but now they have some kind of rank system there so I know this rank and know when I see who greets me which of them will take me. Is funny that way. But for sure, when one discovers some new way to make me cum all over the table or her face or body, the others go right for this when I see them next, so yes they totally share notes.
At another shop, the "main girl" or manager I guess, she actively steals customers from the other girls. Again, I enjoy most all girls, there is something unique for me to enjoy random strangers, regardless if they are 10 or 9 or 6. But of course the main girl will always steal me, she knows I tip well and am clean and polite and that I like to DATYO.
Then, at a shop that has new ownership, the owner I got on random draw in first visit, and then yadayadayada one of the other girls I really took to during some partying that evening, and now I visit her. But the third girl, who will be the manager when owner leaves, she comes in during every session, kisses my head or my butt or whatever the second girl isn't handling, and says some dirty stuff in my ear, and then walks out. When second girl and owner leave soon and new girls come, who knows how this manager one handles. Again, the girls figure out what you like and what they like, and then they sort you out. Am sure they have some kind of mental ranking of their customers to make sure they treat their best customers the best, and if that means they will ensure you are placed with their best girl, or themselves, then they do this.
The competition, for me I hate this. There is one spa in my area that they have several girls, but I never even once got to sample any of them but one. After like ten visits. Is actually why I stopped going there a year ago. This girl is the legend there, but each time I go, she somehow knows I'm there, and comes to bump the other girl out of the room, even if she has a customer herself! I like to see legends of course, but like I said, I enjoy the randomness and to sample strangers. Ten visits and the most I ever saw from any other girl there was the first touch of the TM. So yea they do get possessive I guess, or maybe they like specific dudes for whatever reason.
Shitty spas, no one comes back there anyways so who cares what they do.