> ethnicity

You got a source / proof of that? Because that's a pretty big statement. Nationality makes no sense either, but I assume you mean country of residence. Yes, companies like Hetzner may not let you rent servers if you're in a country they don't like or have bad experience with - I feel like, while that sucks, that could be understandable.

Banning based on ethnicity or nationality would mean that, if you're in Germany on a work visa and try to become a customer, they'd boot you based on your ethnicity. I don't think that's accurate at all.

> I guess old habits die hard

Not sure what you're implying here.

There are better ways than blanket bans, but they are more expensive to implement and continuously maintain. The cheaper price comes from somewhere.