In general, a holding company sounds like a good idea. I've often thought about how sad it must be for a company to have no choice but to submit to a takeover, and a holding company would be another option.
I work at a small newspaper, and I have often feared that the large paper the next town over might try to acquire us. I would not want to work for them, because their employees are not treated well.
It is my hope that if they ever to try to buy our paper, the managers will find a way to create a holding company. I don't know how much money this would require, but I have heard that the guy with the most stock in our company is quite rich from his various investments around town. I'm sure he would do everything he could to save our paper.