> It's almost as if people believe in fairness and compensating people for their work.
Yet in this case we are talking about compensating the compilers/massagers/owners of the datasets, not the original authors from wherever the data was originally scraped.
Copyright is hideously broken, but in theory: the owners only own it because they compensate the authors, which they only do out of an expectation of future profit (on average).
That theory's a fantasy, because extractive systems involving gatekeepers get established, but in this specific case, enforcing copyright would make things fairer for authors. There's no extractive copyright-taking gatekeeper for websites: scrapers don't get copyright, so can't re-license the material they've scraped (unless it's permissively-licensed or something).
Yet in this case we are talking about compensating the compilers/massagers/owners of the datasets, not the original authors from wherever the data was originally scraped.