> But this here is already a prior problem - you depend on these US companies in the first place.

Not really? The upstream problem is getting customers, and the concrete problem is that these humongous American advertising agencies are too big to care about customer services for their smallest clients.

Switching to a EU administrated advertising agency is not obviously better, because that's another big organisation but with even less ties to the local level. The one upside is that a EU level organisation can be legally compelled to fix problems, but even then don't expect it to happen quickly.

> Switching to a EU administrated advertising agency is not obviously better, because that's another big organisation but with even less ties to the local level.

How would an EU organization have less ties to EU businesses than a US corporation that has already demonstrated that it doesn’t care about small EU businesses?