Your simulation seems to only punish selfish actors when that’s not always the case. Doesn’t include natural monopolies, lacks clandestine exploitation, and there’s likely no market capture or saturation. In such a case the only play is to cooperate.

Most people don’t need social media to be justified in being dissatisfied with their body image

There is no nuanced discussion on this topic, as there is only 1 correct reaction, within which any degree of outrage is justified.