Sure. A cabal of tough-as-nails Chinese leaders who lived through the cultural revolution and command the largest standing army on earth will change their politics because Jeff Bezos gives them the cold shoulder.
Sure - if we imposed across-the-board tariffs on Chinese goods and Europe and Japan did likewise, that would be a very, very long lever.
Outside of FantasyLand, that will never happen. And Amazon leaving China will have even less impact on China's polity than Google's leaving China did.
Don't get me wrong - unlike Apple who really can't leave China and continue to make smartphones, Amazon could and should leave China. Amazon, like Google, will have to comply and cooperate with Chinese authorities in uncomfortable and unethical ways that I think will make it hard for Amazon to retain their best and brightest employees in the rest of the world. And Amazon will never be allowed to gain marketshare or influence in China at the expense of a local company - the deck will be sufficiently stacked against them until they lose, much like what Google was facing.
This is western arrogance at its peak.