It's not to motivate a particular person to deliver more, it's to ensure that you're able to hire that person - if they would pay, for example, $2million, then no one with experience at managing decent size tech companies would apply as they can get a much better offer elsewhere.
Also, CEO compensation is effectively between the shareholders and the CEO - if the CEO is making the shareholders happy and they want to gift him $200m for no good reason, well, it's their right to do so, it's their money to spend or waste as they wish, not the employee's.
Also, CEO compensation is effectively between the shareholders and the CEO - if the CEO is making the shareholders happy and they want to gift him $200m for no good reason, well, it's their right to do so, it's their money to spend or waste as they wish, not the employee's.