PE is arguably much worse than VC. VC's business model is well understood and by taking VC funding, you are committing to their expected returns.
PE is, usually, unsolicited and is designed to exploit what appears to be a "lazy" balance sheet, but which is actually a stable business producing output and providing a reasonable ROI.
PE has very few redeeming features.
Labor costs, permits, fees, etc., means that buying used just doesn’t make sense unless it’s almost free.
Whereas developing countries were willing to pay a lot more, sometimes as much as 50 cents on the dollar compared to brand new equipment and they would send a team to rip it out too.
I’ve heard that applied to almost everything too heavy to move by forklift during the 80s, 90s, and 2000s.
Think of PE as the decomposers of capitalism, and VC as its seeds. Most people don't like to think of it that way because they don't like to be reminded that death is a part of life. But if you view capitalism as a living ecosystem and your role within capitalism as someone to accelerate growth and then accelerate death so that new growth can take its place, it all makes sense. And you can probably profit pretty handsomely from it, because most people don't view capitalism like that and instead seek stability in the dying parts.
In the US there have been a few, i.e., apparently less than 20, universities with an applied math program up to date in and teaching optimization.
Sooooo, anyone at all seriously interested, long, for decades, would, could, should visit some of those math programs, meet some of the profs, get recommendations for their former students, call them, chat, and offer a job better than their current lawn mowing, fast food restaurant kitchen cleaning, or car washing. Instead of just the US, might also consider Waterloo in Canada. Actually the Chair of my Ph.D. orals committee specialized in optimization in logistics. After sending 1000+ beautifully written resume copies and hearing back nothing, can begin to conclude that optimization is not a hot field and for highly dedicated optimizers who want to sleep on a cot in a single room, forgo bathing, most days eat bread, other days peanut butter, have no children, wife, or family contact, don't own a car, and must get any needed medical care from some of the last resort special clinics. Ah, real optimization!
When turning the spotlight to capital that is seeking returns, it is true that these areas may be mediocre places to deploy fresh capital, but it doesn't mean that these players aren't competing, and they will probably be cranking out sheet metal and port cargo logistics optimization well after 90% of the AI startups fold.
The caveat is of course Private Equity, which is about 10 trillion in assets. They can derive high returns from these areas, but it requires leverage.