While the "length" of these services is reduced, the bandwidth is not. Waste disposal and collection, both trash and sewage, needs to be able to support the hou

While the "length" of these services is reduced, the bandwidth is not. Waste disposal and collection, both trash and sewage, needs to be able to support the housing. So the parent comment's point is that you can't just free up the land on which the housing will be built, you need urban planning around it to account for the increased population. Unless they privatize that part of the infrastructure or shift the costs over to developers of high-rises, there will need to be active public development in areas where density is at a maximum as far as local infrastructure is concerned (even if density is being kept artificially low by NIMBYism).