It's not a claim
It's an "executive summary" that data later confirms.
His actual "claim" was that the growth of technology and the success of larger size enterprises gives rise to stronger tendency toward monopoly. And monopoly, in turn, accomplishes two things: it makes capitalism even less efficient, and it prepares the time when the proletariat's state will take the ripe monopoly over and the good times will begin.
This is how we were taught. I could not find that logic in the book itself. Like I said, it was mostly cursing, when a proof was needed.
