unless your customers are EU citizens.

If the EU announced that non-EU entities aren't subject to GDPR, I think that would substantially defuse and perhaps entirely eliminate the conflict. Their current guidance is precisely the opposite (https://gdpr.eu/what-is-gdpr/): "the GDPR applies to you even if you’re not in the EU". They even have a details page to make sure it's 100% clear (https://gdpr.eu/companies-outside-of-europe/): if you're a Colorado company with more than 250 employees, selling mainly to other Colorado businesses, the GDPR applies to you in full and the EU claims the authority to levy fines against you for violations.