Germany has a huge problem with "landlord companies"(don't know what they're exactly called. Basically more than half of the appartments in Berlin are owned by two big companies, and either one of them did absorb the other recently or they're in the process of it, I haven't kept up to date. They're has been public referrendums with way more than 50% supporting the expropriation of those appartments in Berlin, yet nothing has been done by the local government even though experts have already confirmed that it would be completely legal and in compliance with our basic law(something similar to the ammendments in america).