Reply from CSFloat
You seem to have a fundamental misunderstanding of payments infrastructure, so thought it’d be a good idea to give you some background.
> This site uses Stripe as its 3rd party payment site.
Yep, who are also the payment processor of many other companies like Google and Amazon.
> Stripe requires 3D Secure to be on all CC transactions.
No, this is a dynamic thing but typically all CS related sites require 3D secure on all payments to prevent fraud.
> No major CC company in the U.S. uses that outdated system
First of all, 3D Secure (and 3D Secure 2 specifically) are _newer_ systems within the credit card processing world. In other words, they are the opposite of being “outdated”.
In fact, the vast vast majority of cards in the U.S. work perfectly fine and support it (yes, all the big banks as well). You probably trigger 3D Secure on other purchases as well.
> Think of the loss of money for a site that doesn’t allow transactions from the richest country on planet Earth.
Nope, the vast majority of users from the U.S. have cards that work perfectly fine with our site (99%+). In fact, most of our payment volume is from the US (and we are a US company).