Artificial shortage of land is right
Quite agree with your last paragraph WW. Our urban and greenbelt environments have their own secrets. When I worked in housing I saw so much "land banking" of sites, green and brownfield and a lot of this stuff is still not built on, years later, despite demand.. Where I live in Lydiate, the majority of the surrounding land, whilst still relatively untouched after the Scotch Piper Pub on the Southport Road, is actually owned by builders or similar who have bought the land and the resident or tenant farmer is allowed to rent the land back whilst the true owners await the a change in planning or green belt legislation.