Central bank digital currencies have the capability to control and prohibit every transaction including the ones between ordinary currency and ‘stable’ crypto-coins.
This will close entering or exiting the crypto market.
The actions of China’s CBDC are telling domestic holders to get out of crypto.
Some small countries are embracing bitcoin but if upcoming US and EU and other CBDC-s take the same action as China this may knock down ‘no asset’ virtual currencies.