Although both in US antitrust and European competition law there is a clear evolution to a much broader application of "rule of reason" (instead of per-se rules), there is also an increasing awareness of the problems of a case-by-case approach. The "error costs approach" (minimizing the sum of...

In the rental residential building stock, the landlord-tenant-dilemma is a well-known barrier to investments in energy efficiency and exacerbated where rent control limits the possibility to raise rents to finance landlords' investments. Some jurisdictions, like Germany, allow landlords to...