I probably wasn't clear on this, but I'm referring more towards the broader neighborhood a person lives in. At least currently, rent control and land ownership is the only clear way to prevent outsiders from coming in and disrupting the community.
The kind that come in, buy up property and evict every tenant living in said building, followed by raising prices such that no one who lived in the area previously could afford it.
This isn't about outsiders who move to a neighborhood with the goal of having a place to live, this is about investors walking into a neighborhood and viewing it as a financial opportunity.