No chance it comes from understanding the world, it is an unfortunate social effect where attacking is much easier than defending. It is particularly apparent in politics where it has to be at least an order of magnitude easier to attack an opposing candidate for their weaknesses rather than defend a friendly candidate for some minor flaw.

And there isn't anything wrong with profit maximisation; we use profits to make decisions about resource allocation. That matters a lot, small inefficiencies leading to waste magnified over the entire economy represent huge damage to the people scraping by on the margins.