Nanotech and mass adoption of graphene based products. I understand the cost hurdle but so was solar which has been seeing major improvements lately to help red

Nanotech and mass adoption of graphene based products. I understand the cost hurdle but so was solar which has been seeing major improvements lately to help reduce cost and improve efficiency. I'm still surprised by how little has been done to make nanotech and/or graphene based products more viable and affordable.