Michael Snow wrote;
It would depend on how Safeway created the list. If Safeway sends employees to WalMart stores to write down every item they can find that Safeway doesn't offer, that's entirely legitimate because there's no copying (in the copyright sense) involved. If Safeway somehow obtains WalMart master internal list of merchandise and takes information from it, then they are copying.
I am 90% sure these lists were not copied, but generated. So it would be more akin to writing down every item as opposed to copying an internal master list. This would would of course have to be confirmed with user:Bogdangiusca who first uploaded the lists.
thanks Martin (User:Bluemoose)