Delivering more value per Sprint may require higher costs.

A complex domain is where _________________

What is the positive effect of synchronizing release schedules across multiple teams?

A Product Owner can work with multiple Scrum Teams

Mario is a very proactive Product Owner and cares a lot about the Scrum Team. He writes the requirements, tests the product himself once development is complete, and validates that it conforms to the Definition of Done. Mario tells the team how much work they will need to be able to complete in the next iteration based on his vision, experience, and skills.
What would you say about Mario?