This used to be Town vs Gown - the conflict between usually rich University students and those who actually lived in say Oxford.<p>Are well funded techies forcing out old people from their homes? No. Are they crowding out the marginal turnover of housing stock - yes. Will this matter? I don't know enough about SF to say for sure, but a town with a proud history, functioning democracy and plannin laws and plenty of juicy tax income has a problem that lets say Detroits mayor can only dream of