This is kind of a typical German/socialist heavy handed approach to things. I don't agree that it should be illegal if you want to share it, but there needs to be a mechanism to give control over data back to users. This may be a bit too advanced for people, but we are really talking about a kind of digital slavery that Facebook and the like are engaged in; the taking of one's free choice and liberty and the fruits of one's labor to sustain the lifestyle of others against their will. It would be a different matter if all of this were transparent and above board, if you were told you are worth $800 per year to Facebook and $1,500 to Google and $700 to Amazon, etc. and that using their services comes with that cost. But you are told or given the impression that it is all "Free", while they harvest you and your information and data.
This is really a question about liberty and freedom and personal agency. I don't even think people quite realize just how much of themselves and their value and freedom they give up to Google, Facebook, Amazon, etc.
For all the self-destruction of Germany that Merkel's de facto communist dictatorship is bearing down on the German and European people through cultural genocide, at least the country is getting one thing right.
Can I just plug the MIT Solid project at this point, that seems to be attempting to give users control over their lives and person's again to break free of this age of digital slavery.