Not that I'm a fan of government regulation for technology issues like this but the security situation is beyond a joke. For one, it's time to hold companies (and executives!) accountable for security of the data they are charged with protecting, often without your consent (eg Equifax). For another, insufficient product liability for companies being lax--even negligent--with security. Honestly I don't see an outcome…
The fact that they're IoT devices is kind of irrelevant, as is their function. The underlying question is: to what extent should manufacturers be made responsible for the damage their products cause?
If you make an electric heater that routinely combusts during normal operation, your customers and the state have some recourse against you – not that it would happen, because there are generally standards in that industry. But if you make a device that quietly becomes part of a botnet, you really aren't going to suffer; even the reputational issues are generally minimal.