Criminals push the rules really hard too. It's just that they're only labeled criminals by society if they're caught, prosecuted, and punished.
People who "push the rules" (I call this cheating, if I was playing a tabletop game with someone who did this, I would say they were cheating too) have an unfair advantage over the people who do follow the rules.
It's like sociopaths: smart sociopaths become successful businesspeople and politicians, while stupid sociopaths end up in prison.
People who are good at pushing the rules and have some kind of knack for knowing which rules to push and how far, end up succeeding over the rule-followers, while the people who lack this talent and push the wrong rules, or push too far, end up failing somehow (and maybe in prison).