To use Starlink you need to have a line-of-sight to the satellites, and that basically requires you'll get to install the ceiling of the whole building and even that might not be enough, right?
To do that you probably need to get the whole building (or the building manager) to go along with this.
So if you have 1/3000 of people wanting this in the city, those same people also need to be in a matching situation to have the possibility to use Starlink, which can significantly reduce the ratio.
It's still possible, but the initiative will need to come from Starlink, possibly involving plans for complete buildings.
edit: I was of course thinking city centers, but in the nearby regions the demand might be significantly higher, access to roof is easy, population density is OK, and fiber internet still not well available.