Starlink is SpaceX's way of guaranteeing SpaceX has a launch client. It increases the number of launches they make, and drives down the cost per launch, both for themselves and for their other customers. They are creating a business model which is both profitable and drives profits to their launch business. This is similar to the synergy Amazon's online store and AWS have with each other. If SpaceX has room on a laun…
https://aws.amazon.com/blogs/aws/migration-complete-amazons-...