> he behaviour of Telekom is the problem. That must change. The state has to ensure fairness rather than allow monopolies to milk The People.

The state is the monopoly here.

Telekom is still partially state-owned (~27%), since they were, back in the 90s, privatized from the former total monopoly "Deutsche Bundespost" and the related ministry "Bundespostministerium". Nowadays, the parts of the ministry that were back then regulating EM spectrum, allowable phones (basically phone police, you had to rent from Bundespost or go to jail) and generally being corrupt (relations of the former ministry to copper manufacturers is why they botched the first fibre rollouts in '95 and then ignored the topic for 20 years). Nowadays, the "Regulierungsbehoerde", staffed with the same people, is supposed to regulate their former colleagues at Telekom. Telekom got all the networks and was never split up, so it still has a (~85%?) monopoly on everything copper basically, as well as on customers, using this monopoly to bully other ISPs as well as it's own customers and extending this monopoly into future tech. And the state has a financial interest in this regulation being as lax as possible. So you can imagine how this goes...