Also, I can only assume you're referring to Apple's case. My understanding is that calling it a retro active law shakedown is misleading. It was always illegal (who to blame for facilitating the behaviour is another question).
Consumer protection was one of the main reasons I voted to stay in the EU. Without the EU's clout these companies would be exploiting consumers relentlessly indefinitely and it's good to have an entity with clout who are able to fight back.