Good material, but the problem is manufacturing it in large amounts, which is something we can't do on a big scale. In the future as we get better with 3D printing, we can either start mass producing them with large printers here on Earth, or mine carbon-rich asteroids for the material and then assemble it in space, thread by thread. A theory I read was that you start with a singular central thread tossed down to the surface and is gradually added onto by climbers over a period of time so it become thicker. It sounds like a plausible theory.