Right now fiat currencies https://en.wikipedia.org/wiki/Fiat_money like euros and dollars are accepted to play.
They are used by gamers to buy accessories or additional lives
In the case of online casinos for betting.
The objective of gaming operators is to bypass or even cut out the middle man by allowing the players to use cryptocurrencies
like bitcoin and others.
The demand for cryptocurrencies would dramatically increase.
The advantage is that gamers, players won't have to worry about exchange rate and constant conversions.
Cryptocurrencies and their underlying blockchain technology will most probably revolutionize this and many more industries.
The revolution has started.
You dont need to look very far to realize this. Juste take a look at steemit
Good now they have something to due during the day.
It's true that cryptos will probably be used in the future by major gambling platforms, but I'd be very skeptical of online bitcoin and other crypto gambling sites right now...there's basically no regulation and you could be throwing your coins in the trash.
If gambling sites are safe right now I'm not sure but people still use dollars and credit cards.
If someone gives his credit card number to a gambling site without verifying there backround or reputation he is also gambling.