Not sure about this at all. This is an extremely competitive market segment with lots of players investing considerable sums of money in product development and promotion but, as it is, this article is no more or less than a puff for Google.
There are lots of competing solutions - many of which offer far more functionality and with a better stickability track record than Google with its "here it is today, tomorrow we're going to withdraw it" history can.
There are massive players like Microsoft with SkyDrive and strategic solution providers like my company - see www.kahootz.com - offering much more "out of the box" than Google's (and Microsoft's) folder/file sharing.
While I agree totally about the inadequacies of email for collaborative working, I think the article might have justified a disclaimer "Sponsored by Google" and readers would be well advised to survey what's "out there" before plunging in with Google.
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