Displacement from specific homes happens when low-income housing is literally knocked down to build high-end towers. A good amount of new supply in cities, though, can rise on under-utilized land (former industrial plots, surface parking lots, abandoned properties, etc.). And the cumulative effect of all that new supply can hold down rents across neighborhoods and cities, including for the poor.

Airbnb rent in Palo Alto for one room is $80 per night and $132 in Mt View whenever there is a tech conference. Most garage in the bay area are turned into a room, even a storage shed in the backyard.  Email motherhealth@gmail.com if you want to join forces in turning all under-utilized lands into affordable rental properties.