Construction costs are currently skyrocketing

At the moment, however, it is also controlled by people who make wrong decisions. People who cancel chips out of fear, who do not expand capacities out of fear, and who act and hoard speculatively out of greed.

Stop Schopenhauer-ing me, you know exactly what I mean. In the context of a resource-conserving transition of traffic, "having" is not always better than "needing." But yes, a technical emergency service that doesn't know what awaits it should be equipped as comprehensively as possible. The technician who knows exactly what he has to do does not necessarily have to be prepared for all cases. And if only no more crazy people steer the vehicles somewhere they are not allowed to go, then the tools will also arrive on time.

Should the craftsman on the construction site also just wait an hour until a missing tool is delivered to him?

If they are German craftsmen, I don't see a problem there. By the time they have been to the hardware store for the third time because something else is missing again, his tool is already there. The Pole welds the tool together himself during the lunch break, not without quickly renewing the neighbor's plumbing installation. Then he can go back to roofing – after all, he is off work already at 10 p.m. ;-)

In the vision, the German craftsman can first get coffee and a sausage sandwich, regardless of whether the tools are already there or not.

And does the heating engineer have his tools and everything he might still need, because an unexpected error might show up during the repair, in his backpack?

Think in terms of several mobility options. No single component meets all needs, that's logical.

But your comprehensive insurance is also extremely expensive. Calculate an average of 400 to 500 euros

Insure beginner drivers and get unlucky with the discount class, suddenly 1200€ is a realistic price.

On the subject:
The changes in general mobility behavior and mobility offerings will not be a significant factor for construction cost increases. However, the shifting of energy and resource consumption onto the polluter will be. Regarding climate and resource protection, Prof. Lamia Messari-Becker says: The gold lies in existing buildings.
Custom-built homes are becoming an ever greater luxury.

In the Vision, the German craftsman can also initially get coffee and a sausage sandwich, regardless of whether the tools are already there or not.

Hopefully in the autonomous coffee and sausage module :p

With us, the good craftsmen come with the cargo bike. Extra heavy material is then delivered separately. So it also works like that in the city area.