Leveraged buy outs aren't about disruption, they're about efficiency. Any company worth doing a hostile takeover of has a working business model (product market fit) and the acquirer is betting they have a lot of expenditures that are basically irrelevant to what they do to make money, or they are running at far below full utilisation on some resources or capacities, which can be cut without materially effecting anything the customer really cares about.
It usually sucks to be the employee of a company that's just been LBOd because layoffs are almost certainly coming, and whether they are or not, you're going to have to do more work, probably with less resources.
But for society as a whole it should be a win if competently executed; getting the same product/service out of less resources leaves the now excess resources free to be used elsewhere.