I'm not so sure, despite the Convention and Visitors' Bureau advertising campaigns. "In one [ad], called 'The Dangers of Thinking,' an announcer urges the audience to 'do without thinking. Do Vegas right now.'" Yeah, Nevada state law, check your guns and your brain at the door.
Game rules may well be a case of market failure. Competition doesn't result in better value, if the consumers don't make rational choices, because they don't know or don't care when they're getting screwed.
But I think most visitors still know and care about the difference between $100 and $200 hotel rooms, ones that are nice and ones that are falling apart, menu prices, and so forth. Despite all the "consolidation," there's still real competition between Vegas hotels. And maybe more to the point, they have to compete with other vacation destinations.
So while the rules at our favorite games may not improve, we may see better values in hotels and restaurants, better comps, and just maybe, some exploitable promotions.