To get cheaper, rockets probably need to eventually be replaced, because they have to carry their own fuel up with them.
I think that a space elevator might be slightly more reasonable than that.
Hey now, I'm as much a fan of megastructures as anyone, but we can't actually build one of those yet. Reusable rockets will SIGNIFICANTLY reduce costs, and we can do it right now- no new wonder materials needed. Fuel makes up a tiny, tiny fraction of space launch costs. Most of it comes from having to build a very low-tolerance, high-tech, massive contraption every time you want to send something up.
Your car might have shitty gas mileage, but you'd still be driving a LOT less if it exploded everytime you arrived somewhere.
Still. If we can figure out how to make CNT's or an equivalent material commercially in large quantities... well, it'll cause a revolution in construction akin to the invention of industrial steel foundries.
It didn't get much attention with the SpaceX landing, but the payload SpaceX was carrying was an inflatable module for the ISS That has been attached over the week-end. It'll be inflated in May.
Yeah, I saw that. I wonder how well it'll stand up to impacts compared to the regular modules? Very appealing idea for transport, though, every decimetre counts when you're trying to fit a payload in an atmospheric spacecraft.