So, your original post was a question, and I answered it.

But maybe your question was rhetorical and masked an overall point you are now trying to clarify. But I still don't understand the point your making!

Are you trying to absolve YouTube of any moral responsibility, while personifying with them with agency ("they have reasons", "they feel like it", "the degree that serves them", "they care") and granting them rights ("1st amendment")?

As for what really motivates corporations - I believe survival, not profit, is the essential goal. Profit is just one strategy - but another is not poisoning it's own environment.