Brings to mind the situation the SodaStream company is in in most countries: pressurized gas canisters aren't safe for untrained people to do maintenance on (e.g. refill) themselves, so it's mostly illegal to own them without a license. Thus, the company operates a 'club' that lends them to people, so that the people are never the legal property-owners of the bottles. But this allows the 'club' to be able to recall the bottle at any time, and since it's not yours, you have to comply.