China's improvements were accomplished by at least embracing the liberal side of economics ie free markets. I dont try to predict the future but the world still looks at the liberal democracies as where they want to go. Immigrants arent risking the oceans to get to China.
I have faith in our institutions. I dont know what you are referring to as 'struggle sessions'. It is some type of inference about something you dont know. Our biggest threat is those who have a disdain for democracy because they are so aggrieved that they dont always get their way.