And that's only when they're really little. Once they hit like 4, they have enough stuff that they want to do that parents can prevent them from doing that is usually enough incentive to just do what they're supposed to.
But for the most part I'm more of the mindset to just let kids run free and only steer em in the right direction when needed. You'd be surprised at how smart a kindergartener can be if you give them the chance to show you.