I recently came across ScrapeHero which publicly sells scraped datasets of various kinds. Store locations, product lists etc. Example: IKEA USA locations.
Is it fully OK in USA to simply state that
The data on this data store is gathered from one or more public sources.We do not claim ownership or copyrights for the data, we only charge for the effort required to gather, clean and structure the data".
I don't doubt that the information is public, but still it's money being made on other people's information. And nowhere is the source listed.
As per example of IKEA, the store locations are available in exactly same format by a simple URL.
Note: I am not from USA (so do not have knowledge in details of the legality of this) - and I have no affiliation to said online store. Just wondering.