[eitally]

I don't think the US is doing a good job of this at all. There's a huge amount of policy-driven gate-keeping that's both ejecting lower income residents from tier 1 & 2 cities [due mostly to cost pressures], and preventing significant infrastructure projects that would ameliorate some of the increasingly pressurized (and politicized) demand signals (better public transport, more lower income housing, improvements in public education - infrastructure & programs).