History is littered with civilizations that had an extended period of corruption and decay before their final collapse. Rome is one example - its "death" argua

History is littered with civilizations that had an extended period of corruption and decay before their final collapse. Rome is one example - its "death" arguably occurred over most of a century. Anyway, your argument is really weird. It implies that all existing regimes are optimally fit since they exist. But that's clearly not true.