[morsch]

I just don't think one order of magnitude in cost-to-orbit is what is stopping us from doing things like assembling a large craft in space.

A cheaper method to orbit is in fact not a necessary building block. It's nice to have, of course. I'm sure we'll end up with more useful stuff in orbit, which is a good thing. But space exploration has so many building blocks still simply missing, this won't change anything fundamentally.