Imagine a Monopoly game in which the bank has run out of little houses. Someone has the cash to build, owns the right properties, and suggests using a button for the missing piece. It sounds like a sensible repair. Surely the game shouldn't stop a perfectly good purchase because a plastic roof is unavailable.
The button would change the game.
In the classic rules, when the bank has no houses left, players who want to build must wait until somebody returns or sells houses to it.[3] The contents list specifies 32 houses, and the 2022 Hasbro rulebook repeats both that quantity and the restriction on buying buildings when none remain.[2] Those pieces are doing more than showing you how much rent to collect. Their absence can prevent somebody else from developing a property at all.
This is wonderfully petty design. You can have the money and the land and still find that your opponent has bought the thing you need to develop it.
The contrast with the cash is especially good. Hasbro's classic rules let the banker write more money on ordinary paper if the bank runs out; its Vintage rules describe issuing paper IOUs.[1][3] Running out of printed money is a bookkeeping problem. Running out of houses is a rule taking effect. The game makes you distinguish between two empty compartments in the same tray.
An upgrade with a beneficiary next door
Now consider the hotel. It looks like the destination: you have built up a street, and here is the larger building with the larger rent. Hasbro's Vintage rules explicitly recommend hotels for their very large rents.[1] Quite reasonably, you might be pleased to afford one.
But you don't just put a hotel beside your houses. Under the classic rules, you need four houses on every property in the color group before buying a hotel; when you upgrade one property, you pay the listed hotel price and return its four houses to the bank.[3]
Those returned houses are the interesting part.
Suppose, as a hypothetical board position, you own a three-street color group with four houses on each street. That's twelve houses in front of you. Other players have the remaining twenty, leaving the bank empty. One rival owns another complete, unmortgaged color group and has money ready, but cannot buy a first house.
Upgrade one of your streets to a hotel and four houses go back into circulation. You have improved your own rent schedule while making it possible for that rival to start building. The rival still has to pay and obey the even-building rule; if players compete for insufficient stock, the classic rules call for an auction.[3] You haven't donated four houses. You have made four houses available, which may be quite enough.
I like the awkwardness of that choice. The attractive purchase has a cost that isn't printed on its deed. To judge it, you have to look across the table rather than only down at your own property.
This isn't an argument that hotels are always a mistake. A higher rent could be exactly what you need, and withholding houses may matter little if nobody else can afford to build. The example shows a tradeoff, not a winning strategy for every board position. Refusing an upgrade on principle would be another way to stop paying attention.
Please leave the button out of it
What interests me here is how little equipment the rule needs. There is no separate shortage tracker or special blockade card in this interaction. The bank's empty house supply is enough. Let everyone substitute buttons indefinitely and you remove that particular source of competition, even if you keep every printed rent and purchase price unchanged.
A table can prefer that variation. I wouldn't insist that enjoying a board game requires submitting to every sentence in its manual. But it is worth knowing when a helpful accommodation changes the choices available to everyone, rather than merely replacing a missing component.
Replacing a lost house to restore the intended supply is one thing. Inventing a thirty-third house because someone wants to buy it is another.
The next time a hotel looks like an obvious upgrade, I'd want to know who has been waiting for those four houses.
Sources
[1] Hasbro Monopoly Vintage rules
[2] Hasbro Monopoly rules, 2022 (library-hosted PDF)
[3] Hasbro Monopoly rules: classic rules and building shortages