We can make graphene very cheaply and easily now, the issue is making large continuous high quality sheets of it. Same for carbon nanotubes. GAI and fusion are

We can make graphene very cheaply and easily now, the issue is making large continuous high quality sheets of it. Same for carbon nanotubes. GAI and fusion are different issues in that we have clear elementary understand of fusion (and a large chunk of the technology worked out). We have little to no understanding of cognition and much of the technology that we use for AI now may (or may not) prove to be irrelevant to GAI.