My neighborhood is fighting this/going through this right now.
The landowners and developers make their money and then leave after running the neighborhood.
Where I used to live (San Mateo California) there is no land to build on to speak of so they will tear down buildings and put taller buildings which house retail and residential housing. I lived about 1 mile from the rail road track in a older 1950’s neighborhood and it is literally over run now and the City was instrumental in it happening.
The home on one of the streets in my old neighborhood all one story ranch homes have 5 story buildings behind the houses it is ridiculous. People would tell the City to knock it off but they did not care. Most of the City council lives in Hillsbourough or San Mateo Park which does not have the high density and are very exclusive hoods..
I now live in Texas.