On the other hand, the fact that you paid for the heated seats does not necessarily mean that the next owner won't need to pay for them - the manufacturer can t

On the other hand, the fact that you paid for the heated seats does not necessarily mean that the next owner won't need to pay for them - the manufacturer can tie that subscription and 'unlocked features' to the owner; I seem to recall reading an article here on HN some months ago about some resold car which got the "unlockable extras" disabled for the new owner.