There's a marked difference though between a struggling collector that's been looking for an item for yrs, versus someone who can write a check and add an item to the five or more that he already has. Does he have a right to(?), sure. Is it moral or ethical to remove that item from the marketplace and help inflate an already unaffordable price scheme(?)...you decide.
There doesn't have to be an intense chasm between the 'haves' and have-nots'....that's only in your mind. It doesn't do a thing for social accountability and the human situation.
Kevin