Airlines had the advantage of having destinations ready for them, all over the world.

Astrolines have no such thing; only the very beginning of a space station; No moonbases, no destination. That's part of the reason why aeronautics and astronautics are hard to compare.

And besides, there's a market for unmanned satellites!

Those satellites need to work for a very long time and continuously , in space.
Humans must be able to return to Earth at short notice and require massive transportation systems.
Satellites are compatible with expendable rockets because building those rockets come into the costs of exploiting the satellites, even though the rockets last only a few minutes while the satellites last 20 years. I remember seeing figures showing that satellites cost more than their rocket even if both are only used once.

Finding a market for humans in space (with reusable shuttles) is going to be far more difficult.

Raoul