A consumer protection law like GDPR would probably be a good thing for US, but it's hard not to see this as SFDC saying, "As a multibillion-dollar SaaS vendor, we welcome regulation that might slow down or prevent a competitor from unseating us."
That's exactly what this is. GDPR is untenable and creates magical rights where none exist. You don't own information about you. Data is data. The only reasonable thing I can see out of it is getting companies to clarify (simplify) their EULAs.
Then when I thought about it I decided that essentially all “ownership” rights are like this. Intellectual property and physical property laws are artificial. There is no basic right, they are all rights created where “none exist”.
They can be useful though, and part of how we decide what kind of society we want to create. Seems like Europe has decided that privacy and control of data personal data is something they want.