Colossally awful take. Corruption is an intractable problem in human history. Power is a magnet for the worst people, and every system we invent can be exploited in innumerable ways. The only variable is how long the people of any individual society can remain free and prosperous before their decline. Temporary recoveries have only happened by lopping off massive chunks of empire, implementing extreme monetary reforms, and/or a switch to full autocracy. Every other outcome is terminal decline.