Considering Cognite made a fortune in the oil and gas industry by basically allowing companies to toss them all their data, them automatically linking and contextualizing everything using a tunable knowledge graph and then giving access this domain model, I think you are onto something. A bit late to the party but yes, this party exists and LLM are useful there for once.

Amusingly most of this data then end up back into Excel or PowerBi but the unbundling and contextualizing itself is worth the price.

Semantic mapping was the answer all along. It just failed on the open web. The idea never died in the industrial world.