Casinos can use both functionality and corporate branding but there are times when, when they want to buy a domain name, the price for the domain can be very expensive because it may be a premium domain name. So if the casino wants to stick with the company brand, they have to be prepared to pay more. If the company is a big company that has a lot of money, it will be okay. But if the company is a small company, then it is not worth it and they should think about choosing another domain name.