Does Elsevier really own Papers, Endnode, and Mendeley?

EDIT: no, it looks like Elsevier just owns Mendeley, which is what I was getting at. Uploading a bunch of papers to a company that's in a position to turn around and say "Those are some nice papers you uploaded to our servers, unfortunately they are evidence that you have fallen victim to piracy, now fork over $15k or we will be forced to proceed with a $15M lawsuit" just seems a bit reckless. Shrug.

I prefer Zotero, even though I would never even think of pirating a paper. Perish the thought!