Comment by User23

> Right, the reason Democracy degenerates is due inherent disagreement, and the fact a democracy can still vote to stop being a democracy.

Another possible explanation is that Democracy degenerates because the average person isn’t very bright and has a high time preference. Since the closer a society is to a true democracy the more the inclinations of the average citizen determine policymaking, you see poorly thought out short term plans that snowball over time into an avalanche of dysfunction.