"Ross was not convicted of selling drugs or illegal items himself, but was held responsible for what others sold on the site."
Ultimately the sentence reflects the governments urgent, non negotiable and final position as arbiter of trade in its capitalist economy. Without this stringent check the market would be free to sell everything from bootleg kidneys to child slaves.
This sort of libertarian absolutionist malarkey is how we wound up with Bolshevik terrorist attacks and pinkerman slaughters.