Scarcity as far as humans can perceive it is subjective not objective.

Whilst I want to pragmatically agree that scarcity, in theory, can be objective, as far as it relates to the human condition, it can only be subjective.

For example we can have one of none of an infinity of unknown objects, it is not the lack or limit of something that makes it scarce but rather a desire for something that is far outweighed by its availability.