So for most middle-class families, the work grind will continue for the rest of their life, until retirement (if it even exists by then), without anything to show for it (owning the place you live in). How are people even going to be able to pay for their rent between retirement (67 years old) and assisted living (+75 years old)?
Don't worry, wealthy people manage fine in Germany and multiply their capital.
It's just a glass ceiling on a middle class.
A small town where I've lived was very much like its neighbours, but one particular neigbour was different in two clearly visible ways: ① there were (still are) more rich people in that neighbour and ② it was much easier to get financing for starting and growing companies in that neighbour.