There's a really strong in-built faith people have that if you buy something, it's essentially non-harmful, and functions at least marginally for its intended p

There's a really strong in-built faith people have that if you buy something, it's essentially non-harmful, and functions at least marginally for its intended purpose. This is actually part of US law (US Commercial Code Art. 2) (which is where we get that BSD license final clause from) - if this warranty isn't explicitly disclaimed, I think most people would assume the products they're receiving are genuine, of at least passable quality, and not actively toxic. Amazon isn't enforcing any of these on its sellers, thereby taking advantage of a huge amount of trust in the system - either the trust is going to be lost, at great detriment to goods markets as a whole, or someone needs to step in to enforce these statutes, since Amazon is unwilling to do it themselves.