That isn't true. At no point did I say or even imply laws weren't required. In fact, I immediately agreed with you!

Laws and ethical frameworks are synergistic in well-functioning systems.

I know that's what you may have felt in your head, I'm just talking about what your comment suggested, even if wasn't directly advocated. You mention ethical codes as filling in a gap here (where there the financial incentives work against you), and my point that it's not really effective for this scale (e.g. the level of coordination for the evil to be avoided). If you didn't mean or realize that implication, fine, I'm just speaking to how it comes off.