If you're an EU business it's easier to do B2B with other EU businesses, just like it's easier for US businesses to do B2B with other US businesses. Not sure this is strange or out of the ordinary, I think it works the same in most places in the world today.

> Is the middleman's nationality that important

Yes, that's why I switched

So important that you'd switch to another middleman at no additional cost over the middleman you're already using?

Probably for quite a few people.