To your point... My dad once told me a story he'd heard about a casino that booked the hottest TV stars of 1979 to be the headlining show at their casino. Donnie & Marie Osmond. But despite the sold-out shows, they regretted the decision because it was such a family-friendly audience that almost nobody stuck around to bet big sums of money in the casino.
The point of the story was that casinos like to make their money from big spenders losing big chunks of money. So much so that it affects decisions they make about which acts to book.