[svandamme]

In Tirol, I think you'll find that most buildings in the mountains are built with wood, or at least a lot of wood in it.
Concrete foundations and parking lots. Concrete ski lifts.. But most everything outside the cities and villages in the valley.. above ground will be mostly wood or at least wood clad.

I don't think that's the real issue here.
The real issue is that once a fire gets under way, they cannot put it out.
where will you find water for fire fighting up in the mountains?? in winter?? ?
Snow, sure, but not water.

They may have water mains for cooking and toilets.. but pressure and volume for fire fighting?? very unlikely.

I reckon, once a fire is truly lit, past the point where a hand held extinguisher can put it out,
they are chit out of luck up there in the mountains.