I am not familiar with laws outside the US - I imagine that if something like this catches on in the US that other countries would feel pressure to run something along these lines in their countries....I suppose many countries you kind of lease the property/land from the government so there would be some hiccups I suppose...but I imagine people armed with the information of this "better bitcoin system" of renting or even owning (as this could be done once banks are based on bitcoin) - imagine if the bank gave you a 50/50 split of money/btc you paid them every month and counted it as "extra" payment towards your loan....every one in the US anyway would start using that bank first and then some better model that was even more competitive would come out and it would be a race to the end with actual winners vs. the current race to the end with no winners....