We (the US) had a very successful, carefully designed system that seems to have been an unstable configuration. It was neither hammer and sickle nor single megacorporation: it was balanced on a hill between both.

The combination of (1) checks and balances, (2) separation of money, religion, corporation, and government, and (3) regulation in moderation worked pretty well for around 200 years. Monopolies and labor abuses were mostly in check. Prosperity was widely shared. Churchill might have said it's "the worst possible system, except for all the others."

Around the mid 70s it started to go astray with the income gap and collection of obscene personal wealth and unchecked corporate powers. With the repeal of Citzens United, that was the end of it. We all know that playing defense against constant assault from an opponent with unlimited resources is a losing proposition.

If we do manage to oust the 1%, we could in theory reset to that decision point: with a few additional constitutional safeguards to keep money out of politics, strengthen ethics barriers for all three branches, etc, we might go another 200 years.