> What prevents you from already selling an appliance that stops working, certificate or not, after the warranty expires?
That sounds malicious -- whereas having it no longer work after the certificate expires sounds like security, and everyone likes security. With enough PR, you can string together something that sounds like a legitimate concern, like "with privacy being a major concern, encryption has progressed leaps and bounds past what we had two years ago -- so even if we were to renew the certificates, we simply do not think our customers' data would be safe when handled by these old devices."
