[traceroute66]

> nasty regressive tax that transfers vast amounts on wealth from

As long as you're not a well off person with an AMEX card that regularly makes purchases outside of your AMEX card currency.

AMEX is nuts in that all non-home currency transactions go via USD.

So, for example, if you have a EUR AMEX and you make a GBP purchase, your conversion will go GBP -> USD -> EUR with AMEX taking a cut at each step along the way.

[simfree]

American Express is a US-centric company, their rest of world market penetratiom and acceptance rates are much lower than in the USA.

Your use case isn't large enough to be a priority to American Express.