That said, I think SF has some unique circumstances that make gentrification challenging. These cause genuine problems that aren't related to simple fear of change. A few of those circumstances:
* SF has a very poor public transport system that severely limits where people can choose to live in relation to their workplace
* SF has problems with homelessness and poverty that are more visible and proportionally higher than its peers (SF has one of the highest rates of homeless people who actively refuse shelter)
* Tech workers often flee the city to have families, meaning they aren't as engaged with the community as others (this exodus also has detrimental effects on the school system in SF)