With all due respect the argument is not concerning a military defeat as per Lenin- it's the inevitable structural self defeat of monopoly capitalism, as predicted by M&E, as per this quotation from Engels

“It is a peculiarity of the bourgeoisie, distinguishing it from all other ruling classes, that there is a turning point in its development after which every increase in its means of power, that is in the first place every increase in its capital, only tends to make it more and more incapable of ruling politically.”

This is what may now be observed in the western brand of capitalism