Of the three most common ransomware-combating suggestions I've been observing over the past few months, I'm strongly opposed to the first two (banning cryptocurrencies or banning ransom payments) and would instead strongly advocate for the third: reinstitute letters of marque for privateers.

Enable activity instead of futilely trying to ban activity. Instead of focusing on punishing the victims and unrelated third parties, focus on punishing and disrupting the perpetrators.

Or if not letters of marque, they could at least just issue a notice that certain activity will have a blind eye turned towards it, to mirror the policy of some of the governments that bear most of the responsibility for ransomware activity.