Who are important attendees to the PI System Demo?

According to the SAFe 6 Scrum Master documentation, one of the important attendees to the PI System Demo is the Business Owners. Business Owners are a small group of stakeholders who have the primary business and technical responsibility for governance, compliance, and return on investment (ROI) for a Solution developed by an Agile Release Train (ART). They are key stakeholders on the ART who must evaluate fitness for use and actively participate in certain ART events. The PI System Demo provides them an opportunity to see the integrated view of new features delivered by the ART, give feedback, and influence the future direction of the solution.