Chris - I do wish you would do a little research to find out some facts before leaping to your usual highly critical and often-wrong conclusions on the basis of your groundless preconceptions.
Let's look at Taylor Wimpey as an example.
The changes in housing completions from FY2010 to FY2011 were:
Private housing: 8,103 - 8,075 (-0.3%)
Affordable housing: 1,824 - 2,048 (+12.3%)
They say, regarding their return to profitability:
"Having secured our financial position in 2009, we significantly improved our financial performance during 2010. We have also refinanced our existing debt facilities and completed the sale of our North American business, providing us with more financial capacity to invest in the UK, as well as further strengthening our balance sheet."
None of this sounds very much like the kind of business model you describe.