The Product Owner is not a committee, it is a person.

Product Owner´s Responsibilities
● Is accountable for maximizing the value of the product
● Effective management of The Product Backlog
● Product Owner can delegate
● Product Owner remains accountable even if he/she delegates
Effective Product Backlog management including:
● Developing and explicitly communicating the Product Goal
● Creating and clearly communicating Product Backlog items
● Ordering Product Backlog items
● Ensuring that the Product Backlog is transparent, visible and understood
The Product Owner may represent the needs of many stakeholders in the Product Backlog.
Adjusting the content or order of the Product Backlog requires convincing (negotiating with criteria) with the Product Owner.
For Product Owners to be successful, the entire organization must respect their decisions.
These decisions are visible in the content and ordering of the Product Backlog, and through the inspectable Increment at the Sprint Review.