One problem I see with your analogy is that the dangerous lawnmower can cause an easily quantifiable harm.

You have to be able to show damages you incurred and assign a dollar value to them to sue people.

That doesn’t work at all for a something that sells your bandwidth to a proxy service. People wouldn’t even be aware that it was happening they weren’t told.

> If I open my own line of home improvement stores and do no oversight on what I sell and wind up selling really dangerous lawnmowers, I'm partly responsible.

While there would be oversight, it is highly unlikely that a person opening a home improvement store would perform any meaningful safety testing. They simply would not be qualified. The oversight would lay in selling certified products, pulling recalled products off the shelf, and (perhaps) removing products if there is a reason to suspect safety issues.

Now consider streaming sticks. There are safety standards for the physical device but, to my knowledge, there are no such standards for the software itself. Heck, there aren't even standards for the engineers who work on the software. One can make highly prejudiced decisions based upon the country of origin. Perhaps there are even good reasons to avoid products from certain countries. Yet the lack of standards also means that products from trustworthy sources can be suspect, since all it takes is a management decision to change things.

Except the devices are not dangerous. Its the software installed on the device. Consumers have a choice. Pay for the trusted Apple TV or Amazon firestick, or go the wild west and see what's on offer.