Product Managers were put in to try and do that but then we identified products wrong. To make Agile work we have to be tech organized along true products and services like car loans and brokerage accounts or customer connections and branch engagement. The technology teams would be aligned to support everything about that product or service not by traditional software lines. If I had to make a change to auto loan software that included online banking changes and general ledger my team would make ALL of the changes not queue up in several teams backlog then go live at the time of the slowest turtle. Scrum masters should work like operations directors in the movies. They take input from the Exec director, director, film director, producer and turn it into action. We turned scrum masters into cheerleaders and time trackers. Engaging the right resources and removing barriers rarely happens. Extensive reporting and useless meetings do.
An on point post, bumped from @jbs+1vAk7EEV.