Anonymity and popularity of Cryptocurrency are two of it's the best attraction.
governments hate anonymity, eventually all altcoins that have anonymity as their strong point will be targeted by governments and exchanges will not list anonymity coins
Will, there comes a time that all online gambling sites will be Cryptocurrency based?
he can accept cryptos if governments legalize cryptos, but you need to understand the following:
person X has money in the bank and wants to play at the online casino, this person will not be looking for a site to buy crypto to later take that crypto and go to play at the online casino, that person will simply use his debit card and will play at the casino online (of course if this online casino accepts debit card payments) .. the point here is that many people want simple and practical things