I think there's another factor here. Many dancers that I've "met" (I use the word advisedly; they were all on the job at the time I encountered them) simply don't BOTHER to improve on things. They are the sorts of people who don't generally have longer-term planning skills, or they don't see their plans through.
I think a lot of people in "dead end" jobs feel that way -- maybe they end up having to put in so much energy just to stay afloat at their current job, that they don't have the time or energy to look for something better, or get educated and certified for something better. Maybe they have class and educational backgrounds that limit their options, but can't afford to take "time out" to change their background. Maybe the ancillary accoutrments of the job -- always going out after work with "the gang," being "expected" to show off your clothing / car / house / Mont Blanc pen -- take up your non-work time to such an extent that ALL your time is actually occupied by your current job.
Strippers can fall into this trap quite easily. I hear of lots of them who spend all their time with people from / associated with their jobs. They date a manager, live with a stripper, drive a long way three or four days a week, and on their few off days they smoke weed with guys from the club and therefore don't get anything else done. Although these activities aren't "required" in the way that a white-collar office would "require" attendance at some retreat hotel boot camp for "networking" on your vacation time, nevertheless the strippers' activities are "expected" in the sense that they "come with the job."
One of the best things about losing your job, is that the experience gives you time to figure out why you hated that job so much, and maybe figure out how to improve on things. For me, whenever I've been working 8 to 5, I basically haven't experienced the capacity to even EAT and SLEEP enough, because of the time and energy demands of the job. I can't imagine that stripping would be physically less challenging.
For me, work is what prevents me from getting better work. I think strippers are in the same boat. And I'm utterly amazed at those women who run some community non-profit agency, as a single mother manage to raise their children, and work a regular job all at the same time. When I'm working a regular job I can't even get done with the regular job before bedtime.