It's the same phenomenon as in the Eastern Bloc countries, where the state subsidized prefab concrete construction and left the building trade to starve. The result was cheap housing for millions (sorely needed after the destructions of the War) and complete destruction of the construction trades.

That’s exactly what I’m saying. There’s a chicken and egg problem. Perhaps an entrepreneur could change things but I think you’d have to be ready to lose a lot of money before getting traction.