I think the problem is like.. if you buy a car, then they will call you if a recall happens. If they'd call you every month to sell you something you'd probably

I think the problem is like.. if you buy a car, then they will call you if a recall happens. If they'd call you every month to sell you something you'd probably tell them off in such a way that they would stop. If food is recalled you may see it at the checkout in the grocery store. No one registers their hardware at the vendor because all they do is spam you with offers then. Or they change their system and despite you registering you'll still get no notice.