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.
I don't understand your response. As I said, the EU's position is that it doesn't matter whether you "just leave", because the GDPR still applies to companies who are not located in the EU and do not do business in the EU.
I get why people find this hard to believe, because it is kind of a crazy rule, but I repeat once again that this does not matter. Even if you have never sold a single product to an EU resident, and never plan to do so, the EU says as my original comment detailed that you are subject to the GDPR the instant an EU resident provides you with personal data.
(And of course, it's also the case that "selling to an EU resident" is substantially broader than "doing business in the EU" - EU residents do often travel to foreign countries and provide personal data to stores they transact with while there.)