> 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.