A large part of the Product Owner role is to establish the mission and vision for their teams work efforts. The Product owner can increase the value the team delivers through different strategies, which are:
Continuous interaction contributes to maximum value being delivered
Domain Training, investing time in teaching the development team about the domain, helping them understand the business and how it works
Vision, taking out time explain the vision for the product and the organization
Value Delivery, making the team understand the value being delivered at the story level.
Doing all the above-listed things not only encourages the team and helps them own the product but it also helps the overall business.