Capitalism IS working. The issue here is whether or not that is a good thing. I could not find where the author defines what GOOD looks like. His focus is solely on the way things are and are becoming and he really doesn't even declare that, in and of itself, bad but, just implies that it's bad.
What is it supposed to look like? The game Monopoly is really helpful here. Capitalism, at it's best, is like the beginning and middle stages of Monopoly. In a 'balanced' economy, you have equal opportunity and no one has any advantage. Slowly, through 'work' and 'sacrifice' (playing the game to the exclusion of anything else) you start to be rewarded with some fruits of your labor. You gain a few possessions that, in turn, produce a little income. All is, mostly, well as long as chance isn't too rough on you and you keep passing go. Before long, you start thinking of more. Adding value to what you have, put up some houses, increase rents, maybe a hotel or two at some point and really get things going. Again, if things go fairly well, each player is doing alright but, advantage starts to build. This person put up houses sooner and it started working. This player had a few bad rolls and it cost him or her. In the middle phase, you start to own a lot of houses, properties and so forth.
All through this, the dealing starts, trade you this for that. Give me that instead of rent. Mid phase, a player drops out either through boredom or bad luck or a deal or two that blew up in their face. Then, it accelerates. Capitalism gets at it's worst. The penalties, rents, get worse and the game reaches a climax where one person has it all. Everyone else is a loser.
THAT is capitalism, the relentless pursuit of more. The roll of the dice and the cards substitute for chance and good and bad luck which, in real life, some can avoid by better timing, better research, better decision making and so forth. The game tends to frustrate people who are good capitalists because they know, in real life, they can make up for a lot of bad luck or poor decisions, or what have you, with working harder and getting it right the next time. The game doesn't allow for that, working harder and decisions and deals outside it's framework but, it gets the basics down.
That's our economy today, too big to fail. Less and less winners and more and more losers. In good times, there are plenty of alternatives for the losers. To try again. To change jobs. To seek and find opportunities elsewhere. In bad times, that becomes harder and harder and, like the game, losers fall by the wayside and winners, again, emerge. Too much immigration in time of tight job market makes things worse. Basic living expenses being very high exacerbates the problems (energy and food). The loss of wealth as a buffer, the housing collapse, make things worse. Global competition makes things worse. Through it all, more people who were in the game fall by the wayside. Less and less winners have more and more, consolidating strength, finding ways and opportunities to protect what they have. They reach the level of having to do less and less deal making and start to be able to dictate more and more due to shear size and power.
Too Big To Fail, with the relentless pursuit of more that is capitalism, winning, becomes what we had in the robber baron era. That IS capitalism. That's what happens. Is that good for the nation?
So, the premise of the article is wrong but, the point stands. Poorly made but, it stands.