I don't disagree that private equity has, historically, not been great at adding value. Sometimes they're good at cutting waste such as private jets and fat management perks. They're finance people, not product people, and that shows up in what they do to companies. More leverage than innovation.
But it's wrong to ignore the impact of competition from very low wage countries. China truly has hollowed out a lot of industrial operations, especially those that ship easily and are not super high tech.
(One might object and say that we don't care about industries that are not bleeding edge. It's true, degreed engineers don't have to care. Tell that to someone without a college degree.)
I'm here to tell you that it is extremely difficult to compete against low-cost country labor if you're doing basic to mid-level industrial manufacturing, because I'm a partner in a company that does that. I spend a lot of time thinking about how to avoid making things they make, because I pay people a reasonable wage, I have to pay their health benefits, I have to pay skilled machinists and engineers, and all of it is 6-20x the hourly costs of their equivalents overseas.
Some just say, well, automate all of it! And anyone who has experience in manufacturing knows that's not a great answer. "Lights-out manufacturing" is a bullshit myth propagated by people who know nothing about manufacturing except watching a couple YouTube videos. Because the labor that can be automated is already fairly limited. It's already mostly automated! It's the mechanics, machinists, tool and die makers, electricians, mechatronics specialists, production managers, procurement, quality managers, mechanical engineers who are most of your cost. Team leads whose jobs are mostly to monitor the machines and tweak the dials. They're good jobs and they pay quite well. A lot more than their equivalents in China. It's not the automatable direct labor that gets you - it's the skilled overhead labor costs inherent to manufacturing.
So, this business does quite well against its domestic competition. But what can I do when the Chinese competition reliably comes over and offers a product for half the cost? Mostly the answer is to avoid making that stuff, and specialize in smaller, higher margin niches. Which works, and is an answer for the business. But it means much less production happening domestically, because the niche stuff is usually a fraction of the volume. And that has lots of knock-on effects throughout the economy.
Go to Germany and talk to people in their industrial sector, like I have. You hear the same story. Factories shutting down because of low cost labor country competition. Magazines catering to Americans talk about how Germany has beaten this, but you'll find the reality when you talk with people in depressed German towns that have had yet another factory move away. This isn't only an American story.
But sure. Let's just blame the accountants and their "pyramid schemes." There's our villain. Investigation complete!