The “taking a physical object” analogy doesn’t even give us anything useful.
Most stores of perishable goods don’t want to hold onto their stock; they want to give it away, ideally in a way that makes them money. In many countries, they will even give away the last excess to homeless people that would not reasonably be able to afford it.
If there’s one orange seller in a town that’s put effort into a supply train to bring oranges there, but someone has shared a magic spell that lets them xerox oranges off the shelf, then that orange seller never gets paid, and has no livelihood; it doesn’t help him that he still has all of the oranges he brought to market, he’s not going to eat them all himself.
I expect the morally deprived will answer “Not my problem.” Yet, it’s going to be an issue for them when they try to run their own business.
Let’s say, ten years in the future, a brilliant scientist invents a magic box that drastically reduces some of the biggest inflictors of CO2, and/or even repairs some of the previous damage. Such a marvelous invention would only be valuable in saving the human race if there were simultaneously other improvements on efficiency and CO2 generation to improve the overall reductions.
Movies get us used to one person/initiative saving the world. What’s more practical is a whole bunch of little initiatives - even if each one doesn’t do enough on its own.