The problem we've got is that 10-20% of the population are speculating while another 50% of the population have almost their entire net worth stuffed into their family home. We're finding it difficult to rein in the top without ruining the middle too.
there are plenty of examples of the top getting reined in, and if people have their wealth in their house then don't take their houses.
this isn't a complicated problem, and it's not difficult to build guillotines