Concentrated use, distributed cost
Shared recreation facilities carry a small number of intense users rather than a broad spread of light ones. The room may be empty for eighteen hours and heavily used for two, which means a frequency set from average occupancy will be wrong in both directions. Owners who never use it see only the line in the budget and press for it to come down. An average is exactly the wrong number to design a service around in a room like this.
That tension does not resolve, so it needs managing rather than solving. Pricing the facility as its own line lets the committee see exactly what it costs and choose a level it can defend to owners. Bundling it into a general amenity figure guarantees that the discussion happens without any facts and produces a decision nobody is happy with. A visible line also makes it far harder for the item to be quietly cut without a decision being recorded.
