The longer I live, the more I realize that everything is a market, and incentives control it all. The reason you follow company policy most the time? You're incentivized to follow the rules so you get the raise, or at lease don't get fired. When there are competing incentives for different responses to the same subject, that's when you need to take extra care to realign the incentives. Trying to institute new behavior? You have to fight momentum, familiarity, and sometimes easiness. That often requires more than a few dictates.