In The Wealth of Nations, Smith tells us that the interests of Capital are often in direct opposition to the interests of society. He only gives us one or two examples, contrary to much of the rest of the book, where he supports his positions with example after example.
This book by Veblen concentrates on one area where the interests of Capital are in opposition to those of society that Smith didn't mention - underutilization. He begins by defining the word "sabotage". Sabotage, he says (p. 1), is a derivative of "sabot", which is French for a wooden shoe. "[Sabotage] means going slow, with a dragging, clumsy movement, such as that manner of footgear may be expected to bring on." I don't know if this meaning of "sabotage" was common when the book was published (1921), or if he's using it differently. In any event, much of the book is based on this definition. In business, sabotage is the general term for anything that results in production being anything less than maximum, anything that is a "conscious withdrawal of efficiency." That could be a workers strike or an owner's lockout. He gives several examples. This sabotage, he says, hurts society in an effort to bring maximum profit (through maximum prices) to the Vested Interests (which he always capitalizes), to the absentee owners who earn by doing nothing.
Veblen was positively impressed by the Bolshevik Revolution. This is not surprising, given the amount of disinformation that came out of that regime. He was not the only smart person taken in by it. There was great concern at the time that this Bolshevik revolution would spread around the world. In the US, it resulted in the first "Red Scare". Veblen says that the Vested Interests in the US have nothing to worry about, as conditions aren't right for such a revolution to take place here "just yet". In the final chapter, he outlines what he thinks the organization of such an (impossible) revolution might look like - that is, the Engineers (the technologists who operate industry) could take over from the Vested Interests (absentee owners) and run things themselves.
This revolution, which he consistently calls an "overturn", is not in any way political. Its intention is to replace the Vested Interests - the absentee owners - with the technologists who actually run the system. He admits that this won't happen "just yet" in America and is, in fact, against the Constitution (see "usufruct").
I find his respect for the Bolsheviks misplaced and misguided, and I'm not entirely on board with his idea that maximizing productivity is necessarily in the interests of society. His ruminations on how an overturning should be organized are a bit pointless, given his admission that such a thing can't happen any time soon (he says some people expect conditions to be right "in two years" but thinks it may be 10 times as long, and here it is a century later and things haven't changed).
Veblen does make quite a few observations that are still true today, in spite of the fact that we're beyond the Industrial age (which brought on the conditions he laments) and well into the Information age. The Vested Interests are just as entrenched as they were back then, and the American sense of the infallibility of business men (always two words in this book) has only increased.