Aiding and abetting!!
Just take these feckless gimmick pushers to court and charge them with aiding and abetting paedo's.
Time in jail, or bludgeoned into liquidation with a sledgehammer fine, would have them rethinking their ill-thought-out stumble into connected devices.
It is a crime to assist criminals. We don't need any clarifying legislation. We just need the authorities to use the tools society have allowed them to just get on with the job of punishing every firm for implementing inadequate security and thus leaving their customers open to all manner of criminal attack.