Wikipedia’s company guideline is blunt: significant coverage in reliable sources that are independent of the company. A homepage does not count. A paid wire does not count. A directory row does not count.
Wikidata is looser than Wikipedia and still not a yellow-pages. Items without sources get deleted. Items that exist only to promote a firm get deleted.
Two bars, two products
Encyclopedia bar: notability. Registry bar: can we observe a Type A firm, and did the owner later prove the site? Mixing the bars is how owners waste a weekend and then buy a GEO package out of spite.
How a business record should talk to those projects
Cite them when they exist. Do not impersonate them. Do not stuff a sameAs to a Wikipedia article that was never written. The file on this site is allowed to be boring. Boring is how you stay true.
Read why this exists. Check a name in the registry. Or start with a free check. Gold is $297 a year for a fuller identity. Paying does not itself verify the website.