Then you misunderstand, the markets and economies of the past 5 decades have been two children playing Candyland. Saying it's not is a No True Scotsman fallacy, because clearly since I labeled it as Candyland economy it must be so.
Sure, and you could argue that we haven’t actually tried communism, or that US democracy is so gerrymandered and neutered (eg Citizens United), etc about any political system. I don’t think we’d be where we are in the US if we had a “pure” democracy, I don’t think Russia would be where it is if they had actually gotten to communism. South America might be a much different place if the US hadn’t looked at the budding socialist movements and said “no way, buddy”.