Merit in ubiquity
this is the "invisible" test, very well-known and time-honored.
if a technology is truly compelling, it proceeds rapidly from  bleeding-edge ideation, through  evaluation,  pilot,  adoption,  standardization, and  commoditization, to  ubiquity, and thus becomes invisible, because it is present in every case. at that point, it becomes necessary to specify when the technology is NOT present, otherwise everyone assumes that the technology is active.
to give a good example from the management field, when i was in college, TQM (Total Quality Management) was a hot new methodology. just a few years later, if it was mentioned at all, people had to look it up, then nod and say, "oh, yes, of course we do that..."
it was an obvious, effective concept, that went from  to  in a very short time; now, almost no one remembers what the original term was.
if virtualization is truly a compelling technology, it will "vanish" in a comparably short time. of course, the idea is something of a late bloomer, considering it was first implemented in the Mainframe Age (late Cretaceous? i am old...); still, i think the commentator is right, and technological ubiquity is indeed imminent.