> because their US providers are going to break the law without notice, willingly or unwillingly
This is a weird hill to die on because it's not true. I can't find anything to support your world view and if anything evidence points to the contrary. Europe has a deliberately more complex legal framework, usually in the hopes of keeping out foreign competition (although it's dubious whether or not that actually works).
> I can't find anything to support your world view
Just look at US laws pertaining to data that goes through US companies.