Cryptocurrencies are the perfect weapon against governments, Banking sector and other Authorities, it has to stay and hopefully some day replace banking as we know it today.
Cryptocurrencies in itself will stay. Just that the majority will be government issued (CBDC).
The reminder will not have any use in everyday life. It will just be used for shady business.
That's my opinion. If it turns out that I am wrong with that prognosis I will be more than happy.