I also live in the Netherlands. I am starting to believe there is something a bit more nefarious at play here.

Anyone who is in power owns a house. Anyone who owns a house profits from house prices increasing. Who benefits if house prices go down? A select few, who are currently unable to buy a house. There is little incentive to actually start building affordable housing. Actually, most people who already own house(s) are probably very happy with the way the market is currently working.