Financial Paradox

Why do you guys think that certain poorer cities with less money and wealth have such a huge option for SCs and even expensive LDs and vip rooms. Like detroit or st louis for example. Where does the momey come from in these towns to create such a clientele? I would think these cities woth somewhat weak economies would have like 10 dollar LDs and like 100 dollar vips.. But no.. If anything ive heard LDs are even more expensive! Any thoughts?