Because C-Level people are more about "how can this company make money" and less about "how can this company treat its workers/customers well" (unless the latter leads to the former).

They are told that increasing value for the investors is the thing that matters. If you have to make "tough choices" that abuse the workers or destroy the brand, oh well. It's worth it if that revenue number keeps going up. To them, it's an acceptable loss to keep the board happy.

Every company that has VC, investors, or stock is going to be like this at one point or another. It's just getting more blatant and obvious now. Disney, WB, Netflix, Twitter, Reddit...it's a list that just keeps growing.