Even if we assume you're correct and every company's true mission is to maximize power and money, the stated mission is still useful in helping us understand how they plan to do this.
The questions in the original comment were really about the "how", and are still worth considering.
The consistency of a mission statement? Are you guys for real?
To be clear: I'm not arguing that everyone at OpenAI or Meta is a bad person, I don't think that's true. Most of their employees are probably normal people. But seriously, you have to tell me what you guys are smoking if a mission statement causes you to update in any direction whatsoever. I can hardly think of anything more devoid of content.
The questions in the original comment were really about the "how", and are still worth considering.