On the same note, what is the difference between a company being acquired by Netflix vs the employee being poached by Netflix. Why is the first one a positive and the second one a negative.
The employer sees employees as resources. Property. Property doesn't have agency. Someone else is taking the employer's property, but the employer isn't being compensated for the loss of their property.
But buying a whole company? That's paying the shareholders for their property. Therefore that's good.