I believe a significant part of enforcement is supposed to be a deterrent. If the U.K. fully enforced speed limits, the only people who would have not had their licenses revoked would be people like me who don’t drive or aren’t in the country any more.
It’s not clear to me that any particular analytics service needs to be run by an American firm, so the point about USA rules forcing actions on USA feels situational rather than permanent.
(I won’t pretend to know if the GDPR allowance for handing data over due to legal obligations is or isn’t relevant here, even normal law is way outside my ken, let alone international).