At this point it is philosophical either way, so you aren't going to get a citation confirming yours or his statements, but this isn't an unheard of belief.
People don't go out and murder people they don't like because it's both at the interest of themselves, and to society.
I recently read The Elephant in the Brain: Hidden Motives in Everyday Life, which discusses this topic in great detail.
> Is there a citation I can refer to about this statement?
'The Book of Life', page 1
Second, the "self-interest" argument doesn't excuse shitty behavior. It might be in my self-interest to steal my neighbor's wallet he forgot outside. It has money in it! Doesn't make it a good idea nor something I would consider as a "self-interested" person.
Plus, it's also in my self-interest not to contribute to lowering the bar of a review system. As someone who uses Amazon and other review sites, I don't like the idea of phony reviews, so even if I worked for a company that "depended" on these reviews, I wouldn't feel good about adding to the problem (nor would I feel good that my employer supposedly needs to rely on falsified reviews).
But if you start from the realistic premise that some actors are bad, the market feedback loop immediately rewards them - which forces other actors to make a choice between acting in similarly unethical ways or being punished for non-compliance.
The real shitty behaviour is Amazon's. It has ultimate control over this fiasco but Bezos clearly has no interest in stopping it - and it can easily be argued that's an example of the same systemic problem with market fundamentalism, but at a higher level.
Is there a citation I can refer to about this statement?
I would argue that laws and regulations are to prevent the very impactful minority of actors that would willfully harm others to benefit themselves.