Remind me please, which are those PC exclusive titles that are worthy of mentioning? The only two companies that make somewhat PC exclusives are Blizzard and id Software, and although their games are very nice, they are just drops of water in the sea of garbage that most PC games are in the moment.
And please don't list all those MMORPGs, I'm talking about the good old action, adventure and racing games
(This is the opinion of a long-time PC supporter and console hater, but even I have surrendered and am willing to acknowledge that the consoles have won the battle.)
Console games have come along way since the incredible growth in portable computing power in the recent years and since consoles are relatively much harder to pirate games for and easier to learn to play (no installation required, just learn the buttons on a controller) by the avg Joe Cool it is natural that there are more titles for the console than the PC. And while there are still a few big name platform exclusive titles out there, alot of games are cross-platform these days.
I'm not sure if this is the "end of the PC gaming" unless you view it purely from the perspective of "PC platform exclusive gaming." Then in that sense yes PC is dying out, just as many titles are crossing more platforms. While there are still platform-exclusive titles out many of the most popular and well received games are multi-platform: (note the following off-the-o-the-head list also contains well-received popular PC-only games as well)
Half Life 2, L4D, Bioshock, Crysis, GRID, Bioshock, Oblivion, Fallout 3, C&C, Civilization IV, Assassins Creed, MMORPGs (here's a genre that has been dominated by PCs but i guess they don't count cause they aint "good ol action adventure games"), Microsoft Flight Simulator, STALKER, FEAR, CoD4/5, FarCry1/2, Mass Effect, Dungeon Siege II, Company of Heroes, Tom Clancy Splinter Cell, etc.
Oh and if you want to get technical about it...xbox is released by microsoft and was the first console to feature built-in harddrive....hmmm sounds alot like another platform we know and still love: the PC. What are consoles (they have a CPU, GPU, hard drive space, memory, only u need to buy a very nice monitor) except un-upgradeable PCs with controllers instead of mouse and keyboard and big monitors? The only true unique console out there today is the Wii because it breaks away form the traditional horsepower-war in that it has an absolutely POS graphics and CPU compared to the other 3 platforms and yet it is pwning in terms of sales.
The PS3 and the Xbox (with the exception of the Wii) are becoming more and more like PCs than anything else (they have hardware very similar to PCs and for PS3 u can install Ubuntu and someone has made an xbox laptop).