This is an interesting concept. Data is currency in economy 2.0 and companies like Google are the new banks. The Economist article cited is surely talking about grand-scale corporate data storage, access and flow control, but I observe that, just as I am not a Fortune 500 company but I still use the same banks they do for my checking and savings accounts, I too use Google Documents (along with some other companies like zoho, box and omnidrive) as an all-online solution for document creation and storage. In fact, I have not opened a local word processing application or saved a document to my own hard disk for the past two semesters. No matter where I find myself, I can create new stuff, access, edit and share it. Not only is it convenient (moreso than an ATM machine for those who still use cash), it it does feel safer. I don't have to worry about what to do if my hard drive crashes or my computer is stolen.
But at what cost? Notes the author, Ben Vershbow at if:book, "Google is swiftly becoming a new kind of monopoly: pervasively, subtly, intimately attached to your personal data flows. You—your data profile, your memory, your clickstreams—are the asset now."
And I can't wait for this.