not a real estate guy but: a) high-speed rail b/t metro areas could change the game here. I live in NYC but would very quickly move to Philly if commuting wasn'

not a real estate guy but: a) high-speed rail b/t metro areas could change the game here. I live in NYC but would very quickly move to Philly if commuting wasn't too much of a hassle b) what would "growth hacking" for cities look like? there are a lot of attractive cities in the US that struggle to steal people who are on the fence between staying in Bay Area/NYC or going somewhere else