Ignoring the rulebook
Ignoring the rulebook is too easy.
So if you pass it down to a team and want them to abide by it, somebody’s gotta do the training, surveillance, and policing, all expensive forms of friction.
Luckily, teams have the natural tendency to come up with their own rules, but expecting these to naturally emerge as the group works together is a mistake. Too often, they remain implicit and ambiguous, causing competition, chaos, waste, and hurt feelings, just the same as having no rules at all.