One of the inputs into any business is labor, if labor is replaceable then business can function much more cost efficiently, since market forces on a replaceable commodity will reduce its cost. So, big tech acts as though labor is replaceable, because it’s in its economic interest to have that be true, hence the desire for standardization, procedure and systematization of labor, if an individuals output is not unique, they can be replaced, and if they are a replaceable commodity, then market forces will reduce their costs.

Sure business can fire the drones, but institutional know how goes away with the top talent.

Not the leaving one is the only individual that matters. The org is made of them too, deals have to be made. Would be easier without having to regulate egos.