Yeah, I copied it from the Süddeutsche here, so no claims to originality. Thanks for the link. It's important to tie different strains of advocacy for this together. I see that Benjamin Lenz is making pretty much the same argument in the comments on the FTD that I am making here. The comment by Rolling_Rock is also interesting, although I do not know if freeing up more private investment will happen.

From what I could find on the internet, the leader of the Berlin state Linke has supported this idea, as well as Andrea Nahles (lefty deputy leader of the SPD). But environment minister Sigmar Gabriel is opposed, on rather spurious grounds.