As most german flats are rented without kitchen appliances there is a certain amount of investment (the landlord does not have to do) that deserves protection.

As most german flats are rented without kitchen appliances there is a certain amount of investment (the landlord does not have to do) that deserves protection. There are simply two markets. One for flats that produce rental income and one for flats for any use. The situation in the US is different as e.g. there are more fixed term rental agreements.