Correct. Capitalism was going to inevitably do itself in because it was so horribly inefficient economically, which only adds to the tragedy of the ill-thought out destrictive interventions of the Cold War era. Vietnam abandoned their attempts at it and started moving towards a capitalist system after only about a decade after the Vietnam War because they rapidly figured out it wasn't working. China and Russia also did the same.
Here's two posts from last week on the topic- https://www.resetera.com/threads/why-hasn't-a-"true"-communist-nation-risen-and-survived.127617/post-22536813
It's kinda hard to survive when the play yard bully tells the other kids not to play with you or they'll get cooties (which in this analogy is no money/goods).