I've found that there's a natural shift at some point where you know the reward has shifted from a financial one to something different. In the dish washing ex

I've found that there's a natural shift at some point where you know the reward has shifted from a financial one to something different. In the dish washing example, it's the reward of clean dishes vs the punishment of having no clean dishes combined with a smelly sink full of dishes. That said, I've definitely lived with roommates that didn't go through that transition.