How much money is there in packaging and selling economic data?

I know this is a vague question but just looking for a ballpark. My friend's business is sitting on a bunch of real time economic data on traffic volumes at everything from ports to raw materials suppliers and construction companies across a single EU country. How would they even go about sizing this, and is it likely to have a market?

business companies construction construction companies country data datascience economic everything materials money packaging question raw selling traffic