The value creation can be seen in the actions of its new owners.
Since taking over, Hees has eliminated hundreds of jobs, grounded corporate jets, limited spending on office supplies and pulled the plug on mini-fridges at the office. Savings will help pay down $12.6 billion in borrowing supporting the deal.
In other words, the old owners were letting executives shirk, or incur unnecessary costs.
If executives do not maximize shareholder value, it gives someone else the opportunity to come up with a better plan, buy the company, and execute it.
If someone else can do things better, faster, cheaper, or more attractively, then consumers will abandon the products of the old company (product market competition), or someone will buy the company and make sure they do (competition in the market for corporate control).
Both types of competition help align the incentives of firms (who want higher profit) with the goals of consumers (who want lower prices, and higher quality).
EXTRA CREDIT: how do we align the incentives of those providing government services, like mail service or regulation, with the goals of consumers?