I don't know much about the ISP market in the EU but Telenor (a Norwegian ISP) owns Tapad which is an adtech company most recently named in a big GDPR case. So

I don't know much about the ISP market in the EU but Telenor (a Norwegian ISP) owns Tapad which is an adtech company most recently named in a big GDPR case. So its not purely a US based problem.