[kilburn]

> banning US-based companies doing business in Europe because of the way EU-customer data is treated in the US would speed up better regulations in the US tremendously

Maybe it would, or maybe it would spur a tariff-war between the EU and US and a great deal of resentment between traditional allies.

> they would have no problem complying with actual sensible requests

Morality and sensibility don't play a role in modern big corps. The real question is: do these requirements impact their bottom line? Chinese censorship rules don't, but EU's data protection rules clearly do. Hence, their willingness to comply will adjust accordingly (i.e.: US corps will fight tooth and nail to prevent that from happening).