So where someone asks if anyone is going to the store can they get them X and someone pipes up that they have it and the person can come in get it
It’s still not in the store.
But anyways in my original case why isn’t that taking away business from the grocery store because eventually they need milk and I’m delaying that eventuality
Understood, but it’s worse in the store right before a purchase, at least in hilchos l”h.