Two years ago, Fast Company reported on the “great tech war” of the four leading horsemen of the Internet–Facebook, Amazon, Google, and Apple (let’s call them the FAGA Four).  The race for Internet dominance has intensified since then, with Amazon pitting the Kindle Fire against the iPad and Google responding to Facebook with Google+.  Each of these four companies has moved from its base to capture more social, mobile, local, delivery, advertising, devices, and design dominions.

Even their emergent competition for the enterprise IT market has intensified lately, when Google introduced its Compute Engine and slashed the prices for its cloud services. Looks like it finally decided to make a more serious attempt to diversify from the $0.5 trillion global advertising market—where it gets almost all of its revenues—to the $3.7 trillion IT market. Facebook is the only one of the “Gang of Four” (Eric Schmidt’s term) that…