You get Its not hoarding if its dice shirt involved and invested (early). Show them the value of listening to customers by letting them step into their shoes for a while. Invite them to your design sprints, usability testing and empathy mapping sessions. Make sure you tell the right stories during presentations. Create empathy. And create a stakeholder map for you and your team to keep track of your stakeholders, the best way to approach each individual; tailor your communication. Let them know you appreciate the effort and time they put in. And share your work often.