I have a profitable, bootstrapped SaaS business based in US. It's not based on ads or selling data. I don't even have a freemium plan. Only a limited free trial after which you have to start paying. It's a trivial application that stores mostly already public data. Only email is required to login so that I can send password reset and other such communication.
I've been talking to a very well known giant corporation (also based in US, but has many global offices) for months. The VP and director love my product and want to start using it right away for their department. But their legal team is scared shitless with 4% fines in GDPR. They are putting some draconian clauses, (various ISO certifications and such) in the contract that I, as a small company, cannot comply. That's their interpretation of GDPR. It doesn't matter whether it's right or wrong.
The VP and Director are really nice people and I've developed very good rapport with them. But I'm afraid their patience will run out soon and they'll go back to using spreadsheets. A lose-lose situation.
This is the side-effect of GDPR.
I'm all up for GDPR. I have uBlock, have blackholed all Facebook domains, etc. But don't assume that GDPR doesn't affect normal business transactions. Of course, blocking European users doesn't do anything for me since I want to do everything I can to protect user privacy.
But anyone who says, "Oh, how hard could it be?" has no idea what they are talking about.