I agree with most of your post except there are some - granted, probably not many - who are decent gals.
They simply dance for guys, tell them they are involved with someone else and will under no circumstances see a guy outside of the club AND they refuse gifts.
They just make their money, do nothing extra and go home.
Granted, they were usually the more attractive ones that frankly do not have to play the mind games you mentioned to make money.
And they were definitely few and far between.
But there are some decent exotic dancers - I actually briefly dated one like that (not that I was as good looking as she was...I hit way above my superficial weight during that relationship).
She never tried to con anyone (that I heard) and had a great rep amongst the other dancers for being decent.
But she was the exception.