Girls who won't Work It

Just observing and complaining about what I see here. I am annoyed by the strip-club dancers who won't do the job of strip-club dancing. At my local favorite club, I found one or two attractive new ones lately, and just couldn't figure out why they didn't want my money. First you identify yourself. At this club, they are required to parade along bar-top and I'm required to dollar-tip each individually -- I know, not the ideal system, but dem's de rules, and it does have the advantage of forcing every girl to pass by every customer at the bar. I avail myself of this advantage, over-tip, request her presence, make it known I have a wad of money, chat politely, that kind of thing. But after her bar-top stroll she just stands in the corner. Second you approach her. I walk over casually, after some banter with other dancers on the floor, and ask her who she's text messaging. She replies! She's friendly! I start to like my chances. She says it's so-and-so and she needs to such-and-such and we chat about how she can't text with her fingernails and so on. I sidle up next to her, we lean and contact and I get to grope an ass-cheek and all is going swimmingly. I learn that she claims to have been dancing several years, that she claims to have been at this particular club with this particular other friend for about nine months, and I believe her because I've seen the friend before and because mostly it seems plausible. I like her speaking style, there's a degree of intelligence and wit, she's not blotto on some substance, she's got her brain on normal and is attending to all that is going on around her in a proper manner. But she departs to finish her make-up (or some other excuse) and then she returns to just stand in the corner. By now I'm getting the message that she finds me creepy. She'll take money from other guys but I'm just too nerdy, or ugly, or fat, or stinky, or cheap, or poorly dressed, or whatever other strange requirement she might have in her head. I am not too crestfallen, there are other girls standing in other corners who may be (definitely WILL be, I soon learn) more receptive. But I observe further. She rebuffs all. She and her friends, a small gaggle standing in corners together, simply don't ever go back to the back room, simply don't ever take a guy up on any offer he might bring her. Several men approach several of them, they like it in their corner. Aside from the mandatory on-stage gyration (this night, it was one song but no disrobing) and then the subsequent mandatory bar-top stroll (topless), she seems to be mandated to remain inert in her corner. I have two questions. First, how does she make money? Her tip-outs and fees must add up to more than the paltry fifteen or twenty bucks she'll make over four or six hours of bar-top strolls. Second, why are there so many of them?