Just pointing out OneDrive is a different animal from those others.
It is. Much different and much better from a security standpoint (business to business, business to WWW). But it isnt safe from government intrusion, and Microsoft products are the most friendly with the NSA and other national security agencies and law enforcement. They are VERY good pals, and their relationship has lived long and prospered since Microsoft got into the Pentagon.
In January 2013, Microsoft landed a $617 MILLION contract with the Department of Defence for Windows 8 upgrades.
http://www.bloomberg.com/news/2013-...ows-8-lifted-by-617-million-defense-deal.html
This is clearly a case of "Ill scratch your back if you scratch mine". Windows 8 is a fail in the enterprise and in the consumer market (as compared to its previous iterations). In a real sense, Microsoft IS the NSA in the cyber world. The entire agency runs on Windows.