A problem with today's science world is that the funding is competitive to a degree scientists need to "sell" their findings with practical applications — the fact they expanded the edge of human knowledge has become worthless. So our systemically incentivized-to-sell scientists do just that. And sometimes it works out and sometimes it is just far fetched bs. But because the edge of current science is so precise, so small, so ho, so cold, so fast, so low energy, etc. translating even the best of finsings into commercially scalable processes has become a major undertaking and despite unprecedented wealth on the top of the society, the ones on top have become averse to risk.
Perfectly reasonable question, especially considering past projections.
Relevant section from Wikipedia https://en.m.wikipedia.org/wiki/Graphene :
> In 2004, the material was rediscovered, isolated and investigated at the University of Manchester,[13][14] by Andre Geim and Konstantin Novoselov. In 2010, Geim and Novoselov were awarded the Nobel Prize in Physics for their "groundbreaking experiments regarding the two-dimensional material graphene".[15] High-quality graphene proved to be surprisingly easy to isolate.
Graphene has become a valuable and useful nanomaterial due to its exceptionally high tensile strength, electrical conductivity, transparency, and being the thinnest two-dimensional material in the world.[4] The global market for graphene was $9 million in 2012,[16] with most of the demand from research and development in semiconductor, electronics, electric batteries,[17] and composites.
There is also a section about applications that expands on it a bit.