If they lack the ability to isolate inventory originating from untrustworthy sources or adequately manage its supplier relationships, then yes.

This will blow up in their face when a bunch of preschoolers die when a fake iPad charger or battery burns the school down.

I do understand what you mean, I just don't understand how Amazon avoids responsibility for not filtering their suppliers whereas all other retailers are enforced to that and face hefty fines for failing to do so. There's no use of removing one individual seller when 10 comes in its place instantly.