Bitcoin gambling is tax-free, That is why all governments are not accepting Bitcoin as a legal currency. And because of this Bitcoin, the online gambling become very easy, and many online casino sites are opened. When the Bitcoin will loose their value till that the bitcoin is the king of online gambling.
Not in all the countries, still if gambling is legalized in a country, a gambling house owner must need to pay taxes when they are encashing their bitcoins.
But to stick within business like without going for encashing but keep on accepting deposits and paying back gamblers, bitcoin must be the right choice for any gambling house.
Bitcoin will not loose its value for any reason in any near future, so we can expect bitcoin will support online gambling all the time. Cheer up!