So let's get this straight. An unemployed family, living 4 to a room in some delapidated squalor in say Gloucester, who's been on a housing list for ages where they live, would NOT move to a new area not 30 miles away, where there was no waiting list and a brand new council semi waiting for them? I'm presuming you haven't seen the council houses near me. They are lovely. Why on earth would someone NOT move? Of course some people would move, which is EXACTLY what has been happening.
I think you were on magic mushrooms posting what you did. Either that or you were so keen to critise you simply forgot to engage your brain. The debate was about why we don't simply build endlessly more houses in the Southwest, and i gave one perfectly good reason, of which there are many others.