[@Scott James]
Ridiculous comment. So, you see no difference between the following two scenarios?
“I’m having a special offer in my appliance shop. Come and choose any stove or fridge free! Yours to take away and keep forever!” (I’m a wise businessman.)
“I’m having a special offer in my appliance shop. Come and choose any stove or fridge free! Keep coming back and claiming a free stove or fridge forever and ever, whenever yours gives you any trouble or if it feels outdated. Keep taking! Forever!” (I’m a clot-headed businessman, about to go bust.)