> since EU citizens will be enjoying those protections and US citizens will not eventually this will translate into an advantage for companies doing business from the EU and into the US. For that reason alone there will be a big incentive for the US to make a law that is symmetrical to remove this advantage.

Given the lack of similar regulation in the US despite the situation being so bad that unsolicited spam subsidises the postal service and that even government agencies sell user data I’m not sure there is a desire for this from the general population.

It doesn’t help that politicians rely on a lot of what would breach the GDPR to help their reelection such as targeted advertising and unsolicited (and often misleading - pretending to be written by the official itself) email and phone campaigns.