Only people without crypto knowledge will be using the fiat in online casinos because they have no reason to still use fiat when we got crypto.Most casino games available on crypto gambling sites,withdrawal and deposits made easy and further no one will ever notice who we are even if we won in millions.
Well that simply put things that people will continue to use Fiat currency in online gambling because cryptocurrency cannot and will not monopolize the online gambling industry. There will always be a country that will oppose cryptocurrency implementation especially in online gambling because government are too paranoid when it comes to money laundering.