1. The second a company is bought out by PE, all the good employees run for the exits. Corporate America isn't exactly known for its empathy and compassion, but working for a PE-owned company means you can be sure the ownership gives 0 shits about anyone working at the company. I have never heard anything but horror stories of those working for PE-owned shops.
2. Given #1, it means the products of said companies always turn to shit pretty fast.
This makes me really wonder about how PE firms can really work their financial magic in the long term. Perhaps they're just better at extracting value out of companies that are already declining in the first place, so they just suck the blood dry before they discard of the carcass?
I'd agree with another comment here. It doesn't even take a declining company, just one small enough to purchase (realistically, you can't buy Apple, it's just too big) with a stable amount of cash coming in. Getting the cash coming in is hard, that takes creativity and creating value, so they need that part in the bag before purchasing the company. But if you have the cash coming in, any fool can just start cutting costs.
The stable income also helps with leverage. You can use the company you're buying as security for a loan to by the same company based on the stable income. Ta-da! That's another reason they need companies with cash coming in, leverage so they can flip bigger companies.
I'm convinced any idiot with a billion dollars laying around could do it.
According to my experience, a company that passes from an owner to another one is basically another, completely different company.