Because their positions as executives is predicated on it. Literally how they got to these vaunted positions in the first place. The dispassionate cruelty and relentless self-aggrandizement is what enticed their predecessors and investor allies to promote them to the top of the Org Chart of one of the wealthiest companies in the world.

Employees are, after all, perfectly interchangeable and disposable. Finding new ways to squeeze them for their labor value is the best way to extract additional profit from them.

Except none of this shit works, so its work harder so we can throw all your code in the trash in another five years when we chase the Next Big Thing.