So what? Facebook handles 600 Terabytes of storage -- per day! Why would you suspect that if Facebook can handle this load, Microsoft could not?Also the problem is over exaggerated as some are saying MS is taking everything well if the take everything then they would go through terabytes of storage a day.
Every "device" that gets activated has a unique, generated, Device ID -- that's how activation works. MS already has that information on their activation servers and, when your device connects to the Internet and MS retrieves data from it, they don't have to search through a haystack to find a needle, they already have it. This is not a situation of hundreds or thousands of MS employees (or contractors) sitting there reading emails, or looking at your website links, or reading your private files -- that is "old school" -- how things were done DECADES ago. Today, there are data mining "engines" (software) that can tear through all of this very quickly, analyzing what they find, and report the results. This is not "tracking" individuals; instead, this is examining the details of private lives.Plus finding my data would be worse then finding a needle in a haystack. My company has about 65 surfaces and MS had did an inquiry about how many Surfaces we have and how we use them. Wouldn't they already know that if they were tracking us?