In the future which is rapidly closing in, everything is a "license." You own nothing. Nothing is transferrable or resellable by you. Things will feel like you own them, but you will not. Despite all the marketing and advertising telling you that you are "buying" something, you will actually only be able to secure a license to possess and use it. These licenses will restrict how you use the thing, and circumventing them will result in federal charges of violating the DMCA. These licenses will also not obligate the seller to anything whatsoever and be voidable at any time with no notice for any or no reason. This is already the case with most peoples 'ownership' of most media, and it is already spreading into other products. Farmers have had to fight John Deere for the right to repair their own tractors (they won temporary special exemptions which can only exist for 3 years at a time and have to be re-fought-for every 3 years) but still can't prevent their own tractors from reporting soil data back to John Deere which the company then sells to Monsanto and other companies.

None of the things you 'buy' will be fungible because they will all be discrete licenses locked to you personally and have no actual 'value.'