There is little political appetite to take on vested interests, and little money for new infrastructure.
Plans for new infrastructure, as part of the Grand Paris scheme, are even more ambitious.
She also backed more Treasury project bonds for new infrastructure projects.
Note that May talked about "more Treasury-backed project bonds for new infrastructure projects".
Any big metropolis can tap a central fund, the Jawaharlal Nehru National Urban Renewal Mission, for new infrastructure.
The demand for new infrastructure, or simply property, can be more than enough to trump the appeal of conservation.
Ulises Carrillo, Ms Ortega's policy advisor, says the incoming governor has ambitious plans for new infrastructure and jobs.
A further £3bn (equivalent to £4bn) has been allocated for new infrastructure work at Faslane and Coulport bases.
The House bill requires that billions of dollars for new infrastructure be spent on American-made iron and steel.
The government promises £100bn for new infrastructure, but on housing it is only planning £3.5bn over the next four years.
