unbundling regulations on new optical-fiber lines. I find that unbundling regulation prevents new providers from building optical … particular, when a new technology is introduced, unbundling regulation has an oligopolization effect on the regulated firms. This … finding in the Japanese telecommunications industry suggests that unbundling regulation during periods of new technology …

Mit der Einführung einer staatlichen Regulierung der Energienetze wurde in Deutschland das gescheiterte Experiment … Bundesnetzagentur die Aufgabe, für einen diskriminierungsfreien Netzzugang und angemessene Netzentgelte zu sorgen. Die zunächst im …

- is incompatible with subloop unbundling. Without subloop unbundling, there is no possibility for alternative operator to …

(ownership unbundling), (ii) one of the network users is partially integrated with the operator and the others are disintegrated … (legal unbundling). We seek to understand when ownership unbundling leads to lower customer prices, and formalize necessary … conditions. In general, legal unbundling implies a less effective regulation, but it reduces the degree of market distortion …