Earlier quoted context omitted.
>These bonds are considered to be very stable, about the same quality as state bonds >can usually recover most of the money through a forced sale This exact line of thinking is what led to the US real estate crash in 2008/2009
That’s true, except that you can only get a loan in Denmark if you have 20% of the purchase price to put down as collateral. That means sub prime mortgage lending doesn’t exist in Denmark and that combined with liar/NINJA loans was a substantial contribution to the US housing crash, together with securitisation. If it had been impossible to securitise mortgages with less than 20% down in collateral the housing crash…
From olau's explanation, it seems that there is enough money flowing, that more than 80% can be financed (in some way) even if it is not in a single or collateral-backed loan.