What I am curious to know about is - what company buys from whom and the whole dependency graph to visualise how complex our modern economy is. But not sure that kind of information is in there.
That sort of data is normally not public
EU exchanges VAT information which is exactly about who buys from whom... down to transactions of 120€ and more if I am not mistaken.
Commercial databases are more limited, but even those can trace ownership of companies to ultimate beneficial owners. Orbis from Bureau Van Dijk is probably the biggest of such databases.