Human systems have a critical bottleneck, it's run by humans. That doesn't mean it's necessarily a flaw, but it means all systems are corruptible if it's run by corrupted humans.
And I mean this for any sort of system from corporate, nonprofits, dictatorships, oligarchs, and democracy. Democracy is still a human-run system and that people seem to think democracy is somehow this bastion of freedom is a delusion.
If we want better systems we need better people running them, but that's a conversation that's emerging so we'll see how it goes.