[vavooom]

"Within our modeling framework, we show that gentrification emerges only when high-income residents have some mobility, even if minimal, highlighting how their movement patterns catalyse the process. We treat relocation flows of agents in our city as time-varying edges in a temporal network, leveraging established tools from network science and human mobility research."

So to summarize, when rich individuals wants to move, they do. Seems logical given they have the excess opportunity to do so with minimal risk / cost often associated with taking on whatever risks are associated with 'gentrifying'

[vavooom]

Also: "as city population density increases, so does the propensity for gentrification" summarizes to people want to live near other people!

[patrickmay]

I suspect it's more to do with living close to work. Only a small percentage of people are able to move without that concern.

There are a lot of us who definitely do not want to live near other people.