That's easily debunked... Let's take NYC as an example - there are many people moving to NYC daily and many are high income people(finance and tech). Where do

That's easily debunked... Let's take NYC as an example - there are many people moving to NYC daily and many are high income people(finance and tech). Where do you think they are going to rent? Are they going to get that $2000 1910s railroad apartment with noise from the subway or... are they going to go for a $4000 apartment in a complex with a gym and a pool? These gentrifying inflows of people have little to no effect on availability of lower cost housing. New housing complexes prevent neighborhood gentrification, by siphoning off the gentry into new buildings.