I'm not sure you were following the point. It was about the culpability of the manufacturer/creator. In your example, it would mean Dell should shoulder some responsibility for somebody misusing their product. The fact is some people think use/trading of certain financial tools should be illegal and that those who caused problems with them should be held responsible. I'm not sure where that line is for financial tools but we already have guardrails in other areas of society to address similar concerns.