Casino prices are going to be set to more reasonable amounts. Perhaps the state one will be
Put them on the price they were at rs4. Caligulas was around 32mil, and 4D Casino was around 17-20mil. You might think now that's still high, yet players used to own all of them in RS4, so in future they'll be subjects of purchasing. Together with this, Casino should generate profits for their owners, non connected to their usages, since its a huge investment that people will have to give. Real players leaving cash in them, should just be a bonus, like it actually happens in real life when high rollers visits Casinos.
Same goes for LV Hotels they need to be lowered to a couple of millions except the big ones such as Emerald Visage etc which should be around 8-10mil, and have a developed profit script that's not connected of the amount of rooms people use. This is about Hotels in general.
There are many small Casinos in LV that people can buy for a milion or two, and we don't want to reach the moment where everything is bought just after 2 years of the start of RS5, because that's how it was at the end of RS4.
Lowering down the prices yes, but not too much specially not without a proper profit script implemented.