The errors that are made on that bound of consent, those are the ones that are the purpose of government to attend to. Third, capitalism makes no inherent claim of superiority. If a system arose that better accommodated for human value and consent, that innovation would not be precluded or stopped by capitalism in any way. Fourth, on the topic of risk a republic if you can keep it, no system can force compliance, and capitalism doesn't pretend that it can be done