In contrast the end user has almost no information, so punishing them is both unfair and ineffective.
Well, they're (a) further up the supply chain that we are, and (b) have the resources to understand and influence their supply chain. You can be pedantic about the word "direct" if you like but I don't think that's useful.
All of the products I can buy may or may not contain this unthetical cobalt. I don't know which, and my personal buying choice doesn't effect anything.
What are you proposing, that everyone with a smartphone or a computer be sued? How will that work?
[EDIT] I'd don't really give a fuck about DVs but I'd love if some of the people DVing my comments on this thread would explain how I've misunderstood orthodox "right"-wing approaches to market-based regulation and commons management, since I don't think I'm claiming anything particularly radical here—quite small-c conservative, actually—and would like to know whether and how I'm missing the mark on it.
All of the stock these corporations can buy may or may not contain this unethically-sourced cobalt. They don't know which, and their corporate buying choices don't affect anything.
Judging from these comments, the bar seems to be set at "if you can't prove the product doesn't contain unethically-sourced materials, don't buy it". That standard would apply equally well to end users. Of course you can't simply trust that your suppliers aren't lying to you, or that their suppliers aren't lying to them, so you have to be personally involved in auditing the entire process from mining to final production and delivery.
Or we could just be reasonable and agree that it's sufficient to avoid knowing or reckless involvement with unethical suppliers, and hold those who actually endanger their workers or lie about the sources of the materials they're selling responsible for their own crimes.
It's great to see where your priorities are.
"Well why can't they restrict themselves to a smaller set of products the supply chains of which they can verify?" well yes, they could, but this is plainly still vastly more burdensome than asking a company to simply make sure the much-smaller set of folks involved in its supply chain aren't killing kids, given the vast resource disparities between the two.
So, while pushing liability "to the end of the chain" may satisfactory complete some kind of line of ethical reasoning, practically speaking it's just a way of saying "I'd rather we do nothing". Pushing the liability to companies might actually accomplish something, without undue burden (as pushing the liability to consumers would, I think it's clear, surely have).
At any rate, isn't the market supposed to be great at sorting these things out? If we could let market-based solutions take over the role of things like food safety certification without massive increases in risk and decreases in convenience and wild inefficiency, as I've seen proposed, then surely these companies can figure out some way to organize a market for supplier validation and inspection that solve the problem more efficiently than government directly inspecting and certifying every part of every supply chain. Right?
[EDIT] to clarify, you're right if you're talking about flat costs across all players in an industry, but wrong about fines or liability exposure that targets specific behavior, as it's possible to avoid those and retain lower costs (yes, of course, compliance and that avoidance of liability has a cost that does tend to raise prices somewhat, but so does any action aimed at accomplishing some goal, and supposedly companies are more efficient at that sort of thing than government so this should be a relatively cheap way to achieve some end, if you think markets work fairly well in general)
Again, not arguing for or against but what's so different about taxing consumers on behalf of actual people in a different country vs. taxing them on behalf of the environment?