At this point I do not think creating a new casino or a dice website would be logical, I think if you are capable of spending that much money than I would rather buy another persons casino from what its worth. That way you are buying a casino that is already running, already known, already has workers and already has promotions going on.

You will have to give him a big chunk of the money or at least offer him something he can't refuse and in the end you will own a successful casino that is working and making you money from day one. If you can't afford that than you probably can't afford start one from scratch neither because it would require at least that much to own or make a new one.