What can spend years in space and still be useful? I'd have though a rocket the launches from earth to land anywhere would be more useful than an orbiting vehicle that can land on demand.
I confess I'm struggling to find a payload that can remain in space for weeks or months and still be delivered by a highly visible fireball (for most of the trajectory) and an easily trackable lander to someone on the ground who would rather not have their precise position known. But that's just me.
Sounds a bit overengineered for civilian applications.