Call me late to the party, naive or uneducated, but I was always under the impression that the "celebrity chefs" owned their restaurants. I just found out this is not true. While some do out and out own their restaurants (the Batali /Bastianich empire is one) many do not. For example, Tom Colicchio does not own Craftsteak. He sold the name and recipes to the company that owns the MGM Grand and in turn gets a salary from them based on sales for the year. One way to know if a chef owns the restaurant is if you can charge the meal to your room. If you can, then the hotel/casino owns the restaurant. I'm not saying this is a steadfast rule, but more often than not I'm told it is the case.
It's amazing what you learn when you get friendly with the bar staff, chefs, etc.