IF this can be scaled up massively and the strengths hold up for larger cables then theoretically you might make a space elevator… I would love to see such a thing happen, but I doubt that it would ever be practical. There are so many engineering and political challenges beyond the strength of the cable… once you build a space elevator you have to trust that some bad actor with moderate space flight capability won’t destroy it- either intentionally or through incompetence- LEO space is getting crowded.

However the true benefits would likely be more terrestrial in nature, super high energy density batteries, and ultra lightweight structural materials could revolutionize many aspects of daily life. They even have potential to perform desalinization to provide drinking water far more efficiently than current methods.

I will read the paper more carefully this week.