If this passes, Apple should just send an email and notification to every customer in the EU saying something to the effect of, “due to your government’s heavy-handed overreach, they will be blocking Apple from providing safe and secure services, like our App Store. As a result, we can no longer legally offer these services in the EU and will cease operations within 30 days.”
Just the threat of millions of devices losing iMessage, FaceTime, and the App Store framed properly will get the public on their side. I guarantee it’d turn this whole thing around within 48 hours.