Bitcoin is more like a gold, silver or you can say real state property. People invest on it because it has a great profitability. so i would not say that btc is casino. And talking about future money bitcoin has a possibility to achieve that but i think it will take time. It needs some major correction before that to happen.
Bitcoin is more than the characteristics of gold or silver, it is risk and so volatile but it is profitable. We can say also bitcoin have a characteristics of a casino, people and investors are gambling thier capital, take the risk and volatile to earn money in the right time. Bitcoin is already a money a digital money used by many people all over the world, it is a digital money without a tax.