> you're aware that the space shuttle was "reusable" though, right?
Shuttle was reüsable on paper. It couldn’t unlock high-cadence launch because it was not built on an assembly line and had long, manual and error-prone refurbishment requirements.
Put practically, one couldn’t build a LEO constellation like Starlink or aim for in-orbit refuelling with the Shuttle. One can do the former with Falcon 9. One can attempt the latter with Starship.
I don't disagree, after all, the shuttles booster was(at least to my knowledge) more expensive them the reusable shuttle, but that's once again a qualifier to the statement that - without that qualifier, does continue to point to the shuttle.
> without that qualifier, does continue to point to the shuttle
The qualifier is only semantically meaningful. The engineering benefits one gets from reusability--low costs and high cadence--weren't there for the Space Shuttle.
The shuttle’s solid rocket boosters splashed down in the ocean via parachute, and were recovered and reused. The main engines and thrusters/rcs were also reused. Only the external tank was disposed. The issue with the shuttle (among many) was that the reuse was not actually economical due to the maintenance required between each launch.
Because in this context, your question would squarly land around the time before STS-1 was launched in '81
For this to be about space x, you'd have to add some qualifiers - like "privately owned"