[arrozconcosas]

How will you know if the total amount of ransom payments goes down? How will you know how much is under the table vs over the table? This argument seems to be "the over the table stuff goes down therefore the total goes down" which is faulty logic.

[scoopertrooper]

It would follow logically that it'd go down. It's like saying making murder illegal would only push murder under the table.

A company currently performs a simple mathematical equation when deciding to pay a ransom. Does the reputational and financial cost of not paying the ransom outweigh the price of the ransom? In a world where ransom payments were illegal, then those same companies would also have to include the legal penalties and probability of being caught as part of that equation.

Obviously, some companies would still see a net benefit in paying the ransom, but fewer would, so less ransoms would be paid.

It seems to me like you're trying to use 'war on drugs' logic on ransoms. The key difference is that companies don't want to pay ransoms, but do so out of necessity.

[addingnumbers]

Reducing the growth rate of a subset of a total does reduce the growth rate of that total.