The article (and the DFC Article it links to) only mentions "install base", not software sales (which I think would be the most informative metric if we wanted

The article (and the DFC Article it links to) only mentions "install base", not software sales (which I think would be the most informative metric if we wanted to see whether the industry was being "led" by the PS2). In fact, the only mention of software sales was this: "From a pure revenue perspective, the biggest system for software sales in 2007 was the PC, if you include revenue generated from online services." Of course the PS2 is going to have the largest install base of any system still on the market, since it's been out far longer than the others.