>Using finger printing for fraud detection would only catch someone using different cards on the same machine.
In this context the goal of fingerprinting is to detect requests coming from an attacker. It does not care about the ability to distinguish between individual machines.
>Once a card is deemed stolen it stops working so it's unnecessary for that scenario.
The whole point of automating it is so you can cash out many stolen credit cards. If you only have one you might as well do it manually.
>Increasing that price means few customers lower revenue
Making more revenue doesn't matter if that extra revenue ends up getting eaten by chargebacks.
