So to recap, you assert that-
1) Besides MMO's, PC games account for a tiny amount of revenue and
2) Console games are significantly more profitable than PC games
Your 'evidence' for the first point appears to be one financial report from one company, said company not only having a very lacklustre PC line-up, but also the biggest grossing MMO (and possibly) game in the world. Bit skewed, no? If I had Valve's sales and Steam income figures, or Paradox's financial report, the opposite conclusion could easily be made and would have just as much validity as yours.
For the second point, you've again gone for a single financial report, but this time, you've conveniently ignored the MMO and despite there being no break down at all of profitability across the various platforms, you've decided that console games are more profitable. For all we know, the 30% of profit that comes from consoles might be split equally between all 3, the PC retail might account for 20% and the WoW subs for 50% of the overall profit. The PC might only account for 3% of profit, but make more money per unit sold. Hell, PC retail might even be making a loss- the point is you don't know because you don't have any profit breakdown figures to back up your assertion.
As seems typical of PC sales discussions, you've fallen into the usual trap of cherry-picking what actually counts towards revenue (there's a lot more to gaming than so called 'core' retail boxed games) and trying to compare the PC to all consoles combined, instead of each one individually. Even worse, you're using the relative lack of data available to extrapolate wildly and come to silly conclusions.
Given that the PC gets a good range of multi-platform games from all the major publishers, has a good range of exclusives, a thriving Indy scene, and a DD platform with 25 million users, I'd say the profits are there to be made. If they weren't no one would be making PC games any more. The only area it's lacking is in really big budget exclusives, but equally, apart from some first party MS and Sony titles, the HD consoles aren't getting those sort of exclusives any more either, that's because with rising development costs, they're far too risky and no longer financially viable on any single platform.