If you're thinking of passenger service, perhaps it is a bit unattractive in the short term. No good launching and landing spots.

But for military use - think logistics. Rapid delivery of equipment to unusual places. This applies to civilian purposes as well. All kinds of use-cases for speeding up cargo.

The entire economics of Starship and rapid reusability was presented at the beginning of the Starbase work, way back when Hoppy was a thing. He's been sticking to the plan since then. You might want it to be fiction, but he's been very good at figuring out business plans to leverage his ultimate goals.