Your success is the success of the product. You’re accountable for devising and executing a winning plan — no excuses.
The Role of a Product Manager
Michael Siliski

So true in so many ways yet this is rare to see in my own personal experience.

Another thing to add is that I believe a product manager should be able to sell their product like nobody else since they know their product inside out and better than anyone else. I would add that a lot of what you defined ultimately equates to a great role in leadership which most organizations lack.