Revenue is more complex than it looks.
On the org chart, revenue looks like one function. In practice it's four or five teams — pricing, distribution, groups, marketing, ancillary — each on its own system, each measured on its own number, each deciding in parallel about the same guest.
A casino-resort layers a whole second set on top. Reading demand lives with pricing; generating it lives with marketing; packaging a concert weekend lives nowhere in particular. The value doesn't leak inside any one silo — it leaks in the seams between them.