The role of product management

During the past years I have been leading marketing and product management teams with a continuous drive to improve performance and develop the department to highly performing teams. One consistent factor in these roles have been the search together with the teams what our mission and role is in the organization.
That is how I found an inspiring document with a great view of the added value of Product Management or "How a market-driven focus leads companies to build products people want to buy".
I have always believed that a product manager is the "CEO of the product" and that the role of PM is a management role not an operational sales support or marketing communication role.
In my efforts to define the most optimal marketing organization in the medical device industry, on element always stood out and that is the fact that it is impossible to integrate all aspects of product management - strategic, application, technical, commercial and marketing communication - into one person. There should either be sufficient expert support roles or it might be an idea to split the PM job as suggested in the article:
Strategic Role of Product Management