Because of the presence of crypto, it has been proven that gambling sites are even more popular, and the gambling world can also affect price movements because there are definitely some people who buy crypto just to gamble, this is easier and less complicated than betting with fiat on certain online gambling sites.
Crypto gambling is like a complement, of course it can be used as a spare time filler as entertainment.
Over time, later betting with fiat will be considered ancient and left behind.