I can say all day that my ideas are 'good.' But the only place in the modern era that has tried mass 'free housing' are communist ones and all those societies stopped doing it or failed altogether. That doesn't seem like it has worked out as a 'good idea.'
Finland does not have free housing for everybody. Finland has never had free housing for everybody. Finland will never have free housing for everybody. For historical examples of that idea, you have to look to the neighbour in the East.