> You could change that percentage to any amount and it wouldn't change a thing,
So what you're saying is that the criminals could quadruple their demands, and everyone would still pay?
I doubt it works like that. SOME high profile companies would still pay, but in many cases the threat would not justify paying 4x more.
If we assume the criminals do not generally do much research on each company's ability to pay, but just have a more or less even price for everyone, I think it's rather safe to assume that they've tuned the ransoms to a level that more or less optimizes the total payment they receive.
If it's made 4x more expensive to pay, fewer organizations would pay. And those who still pay will provide a lot of funding for efforts to battle this kind of crime.
> and ransomware attackers will just lower the price if it's not
This is at least half the purpose of adding the tax. If the price is lowered significantly, the economic loss for the non-criminal part of society is reduced.
Also, lower revenues means that it will get harder for ransomware groups to "attract talent", meaning there will be fewer threats out there.
Making payments illegal, on the other hand, just pushes the payments under ground. It's going to be about as successful as when they tried to ban alcohol.