Opportunity rarely arrives in a clean category.
Entrepreneurial momentum often starts before the narrative is tidy. A strange asset, a difficult constraint, an overlooked market, or an odd timing window can become the beginning of something larger if someone is willing to inspect it seriously.
The Fernsehturm story is interesting because it does not begin with a pitch-deck abstraction. It begins with a concrete object, a set of constraints, and the question of whether an unusual setting can be turned into a usable business path.
The operating lesson.
The useful part is not romance around disruption. It is the discipline of turning a surprising opening into a sequence of decisions: what has to be learned, who has to be convinced, which risks are real, and what can be tested before the story becomes too large.