[retSava]

It's far easier and efficient to have the seller be responsible for what they sell, rather than every buyer learn relevant regulations and research whether any potential buy follows that.

And regulations are necessary since many sellers are without ethics/morals and simply want to sell.

The cost to the individual can be huge (eg cancer, home burnt down), and the society as well (environment etc).

I get the line of thought that "a simple product search engine like Amazon" shouldn't be held responsible for every single small item sold, but I think they should. The information and power balance is incredibly offset here.

Don't forget that Amazon is one of the largest companies on this planet, to a large extent because they take this shortcut of "money first, responsibility later". So I do blame Amazon (among others). The old discussion of privatization of profit and society takes the risk and cost...