Wrongheaded thinking Mr. Quinn!
1)Most sensible people with families don't want to live in the high density environment - that's just planners nonsense believing that they do ( or should be forced to).
2) Building transit simply encourages job seekers and businesses to use them.  Congestion and travel times cause both businesses and commuters to rethink where they want to work, travel and do business, and they will move to better options for themselves. Doesn't work for government services though, since they locate wherever they want to ( no market discipline there).
3) Elminate the planning and obstructions like the ALR, and zoning and the market will fix the housing affordability problem.