Did a similar back-of-the-napkin and got 5x $ / MW of orbital vs. terrestrial. This article's analysis is ~3.4x.

I do wonder, at what factor of orbital to terrestrial cost factor it becomes worthwhile.

The greater the terrestrial lead time, red tape, permitting, regulations on Earth, the higher the orbital-to-terrestrial factor that's acceptable.

A lights-out automated production line pumping out GPU satellites into a daily Starship launch feels "cleaner" from an end-to-end automation perspective vs years long land acquisition, planning and environment approvals, construction.

More expensive, for sure, but feels way more copy-paste the factory, "linearly scalable" than physical construction.