The proportion of the population that will pay a ransom with a positive expected valuation will never be 0 unless you can guarantee that it is impossible to make a ransom offer which yields a positive expected valuation to the victim.
In effect this means that refusing to pay a ransom with a positive expected valuation subsidizes outcomes for those that do pay the ransom.
In effect this means that refusing to pay a ransom with a positive expected valuation subsidizes outcomes for those that do pay the ransom.