Raph Koster discusses the "barbarians at the gates" of the current MMOG development community and suggests that the current industry titans may not be the biggest fish in the pond for long.
"So it's entirely possibly for there to be a whole industry going on, quite happily making tons of money. The ground can shift out from under them and the barbarians who come in at the gate do what they were doing, only do it in a fresh way, and just put them out of business. I think there is the risk that we're seeing that happen now, because every ten years or so, it seems to happen."
Read the whole article at Gamasutra.