> where you actually have to entice your employees not to leave

Yes, by offering them things like equity in the company. This practice throws all that out the window though, in essence unilaterally renegotiating the terms of employment. When the leadership team can be acquired independently of the company then these employees can be left with nothing. Sometimes the corp doing the acquisition will throw a bone to the dregs left, but that does not appear to be legally required. It's exploitative and unjust.