Accurate figures don't lie. We don't have accurate figures. What few figures we do have show an even split. You can spin things whichever way you like, but unless your aim is propaganda you simply cannot say anything without decent figures, and we don't have *any*.
But okay, if we're forgetting silly things like facts! A 200 million strong gaming-capable userbase was created in the last two years alone, cards from 5 years ago still hold their own. Obviously this proves there are 500 million PC gamers out there. See? I can do it too - we don't have good enough figures to speculate, we should stop speculating.
And just to back you up, PC gaming has actually hit a huge resurgence. EA said in their last earnings report almost 60% of their sales were from PC sales(online and off).
PC games have seen a 20% increase in sales pretty much every year, making over $16.2 billion in revenue in 2010 alone.
http://www.rockpapershotgun.com/2011/03/01/pc-is-strong-pc-games-revenue-up-20/
PC sales never really went down, but it did not help when a whole lot of (Microsoft and sony backed) anolysts decried the end of PC gaming for years. In reality, if devs and publishers did'nt make money on PC game sales they would stop making them, when In fact the trend is more and more are making PC games now.
The numbers quoted in this article, were years old NPD numbers. NPD does not track online sales, and they only track sales from sample stores in their group. Meaning they dont really have accurate numbers at all. 500k copies of oblivion? No that is wrong. Oblivion PC sales were probably closer to half of the total. But NPD would not record that as their main sales figure provider , gamestop, has 3 copies of a sims expansion and world of warcraft for the mac.
The future of gaming is services like Steam, Direct2drive, gog ect. The amount of games sold through them has never really been able to be counted. But that is where the future is, that is what gaming will look like in 5 years.