> Amazon can not compel you to buy from them, and Amazon can not throw you in jail if they don't like you as a customer.
Of course they can, by becoming a monopoly and driving all other options for things you need out of business. Also by manipulating you with advertisements and propaganda. Coercion has many forms.
Monopolies are illegal if established through improper conduct and anti-competitive practices. The exceptions would be for State-owned or State-granted monopolies... Amazon is neither of those.
> States fall for many reasons, but primarily causes are war and revolution
So, the way to get rid of Amazon would be to get the Government to simply start a judicial process against a company. The way to get rid of the Government would require bloodshed. Can we agree that that n corrupt and power-abusive Government is far more dangerous than Amazon (or any other corporation) could ever be?