Sure, in terms of performance and graphics, but PC still doesn't conveniently offer the same upsides that console gaming offers.
Sure, you can basically do that... connecting PC to TV, getting a compatible controller and hoping the game can be played with a controller and if it's a MP game, you get rolled cos everyone else uses mouse and keyboard
Then there's the fact that the games are never optimized well for YOUR system. It might work fine, or it might run like crap, depending what components you have and which GPU manufacturer paid more to the devs. I'm personally a PC gamer for the most parts for the last decade, but I'm getting tired of the endless game of tag you have to do with hardware and even then it's not guaranteed it runs many games well.. then you have to mess around with INI-files and install beta drivers and who knows what. That's what I think is one of the greatest selling points consoles have had and will continue to have - the game will run guaranteed on your console if its made for your console and everyone else you play with runs it at the exact same performance.
After getting family and just otherwise changing as a gamer, I'm starting to move away from PC gaming.. I dont enjoy slouching at my desk for hours anymore and then there are the things I mentioned above. There are still games I'll play on PC, but I suppose next gen console will likely do most of my gaming for me. PCs have always been more powerful, that's never been the reason why people buy consoles, but the self proclaimed PC master race never seems to get that. Steam just recently reached Xbox Live in active users, which is still a far cry from topping PSN and whatever Nintendo network there is combined.