If you are an alien learning about humans, you should start with some children's books. I think you're missing some pretty fundamental knowledge here
What I'm hearing you say is that once a founder starts a business and hires a single employee they must operate that company until death. That seems like a ridiculous position to me and perhaps you're missing some fundamental knowledge on life. If that were somehow codified to law, I would've never started a business.
[1] http://www.americanbusinessmag.com/2012/03/selling-your-busi...
In my situation, my employees profited nicely from a PE acquisition. They all got a sizeable transaction bonus. Not only that, they received additional job security with the backing of a large company.
For certain, groups where individuals all act in their own self interest sometimes come up with the best solutions for everyone. It bothers me that people believe either maxim must always be true for all circumstances. (this is effectively socialism vs. libertarianism) It seems very clear to me that each camp has supporting examples, and that there are very few universal maxims.
Getting back to the main point, I think there have been many instances were selfish private equity has made things worse for people, which does not discount instances where it has made things better.
I still don't believe that a founder doing what's best for them and their family is "wrong". Absolutely, employees should be a concern and a founder looking to be acquired should do whatever possible to ensure a successful future for them as well. But to say that a founder must own a company forever and ever with no chance at ever exiting is not something I can agree with.
No hard feelings, but I hope we can both take away here that there are nuances to this topic (and every other topic) and to say that "selfish behavior is wrong" is too extreme a statement.
The universe is a cold, uncaring place. Part of the reason we create societies is to improve on that.
Conversely, without the World you are nothing. You can't survive without the help of others.