Not to be too realistic, but the weak point of democracies is the power shifts to banking.

Michael Hudson's recent book, Forgive Them Their Debts, went into how this played out in the Ancient world, between rulers trying to hold the state together, while the moneylenders used predatory lending to siphon value out of it, so the practice of debt jubilees evolved as a circuit breaker.

Currently it's safe to say, the banks, energy companies and MIC own the political system, since simply getting elected is so expensive and requires approval of the deep state/bureaucracy. As Russiagate and Trump showed.

The fact is that as executive and regulatory function, government is analogous to the central nervous system, while money and banking are equivalent to blood and the circulation system, distributing value around the communal body.

There was a time when government was private and now banking is certainly having its own, "Let them eat cake." moment.

Or we just collapse back into feudalism, with the various oligarchs, warlords, cartels and gangs fighting for their share of a rapidly shrinking pie.