If Germany is a crypto-friendly country and there's a local crypto exchange for a fast deposit and payment, it could work. They might switch to crypto gambling.

But if there are other deposit options aside from the use of Visa, Mastercard, and Paypal, people can just easily switch payment options and continue to play on their usual and preferred online casinos. I don't know how online casinos there works but surely they have deposit options there aside from those banned payment options.

Crypto is a good option or replacement but without people who are interested on using it, it might not be an option for gamblers there.