Very interesting. A very basic house in Austria is over 500k and not in a hot location, while to my knowledge wages here are not higher than in Finland. How is a house so cheap in Finland? 200k is basically Eastern/Southern European house prices, where wages are lower.
I feel like the insane housing prices here are not just related to nimbyism that restricts supply, but mostly to speculation driven by banking, political greed, realtors, investors, basically any and all large piles of money that have housing constantly going up fast so that their piles of money get even bigger.
In a rural but well maintained area in France, my parents bought recently an old family house for 80k (to which you have to add some renovation costs). In this area a brand new house with a good amount of land is 200-300k. In my own area, a new house is more along the lines of 500k. In any case those things are highly localized here, I imagine it's true in Austria as well (though the country is much smaller than either Finland or France).
It is just depends place there is still places where nimbyism does not run rampart. We we paid like 200k€ from our new house.