Hey - thanks for responding.
I think it was this HN discussion[1] of housing prices that led me to wonder about this; I considered commenting there but it could've seemed like an obscure tangent.
It seems unsustainable societally for housing prices to continue to rise long-term, and I'm wondering if there is a way to graphically represent the state of the market and the players involved, in order to first of all understand the situation, and then to communicate what is going on to a variety of different audiences.