Vini,
I think one of the aspects one must consider when it comes to the issue of "gentrification" is what has been referred to as the trickle vs. the fire hose. Too often in our neighbourhoods -- especially those deemed "disadvantaged" -- we see two responses: Either a) a starvation of investment that leads to further decline (i.e. the trickle), or b) a massive infusion of spending that blows away nearly everything that previously existed in the neighbourhood all at once (i.e. the fire hose). Both approaches ultimately wind-up harming the people who live in the neighbourhood as they must deal with either a) diminished amenities, services, and quality of life from lack of investment; or b) massive disruption to their way of life from huge money and extreme changes that ultimately displace them completely.
The answer, of course, is to strike the balance by seeking a middle path: We must
incrementally invest in our neighbourhoods in such a way that they can adapt and evolve without complete neglect nor harmfully large infusions of capital. I've linked to an article below that does a much better job of explaining the concept. I'd encourage you to explore the website further to get a feel for some ideas and strategies that can help us mitigate the downsides associated with "gentrification;" it's a great resource!
https://www.strongtowns.org/journal/2019/6/19/the-trickle-or-the-fire-hose------------------------------
Joel Dixon P.E., M.ASCE
Project Manager
Oklahoma City OK
------------------------------