Hmm, I can't tell if you're joking but it bears exploring the economics of whether the publishers as really trying to "destroy the PC market" with restrictive DRM because for almost any business that seems counter-intuitive and schizophrenic but publishers like all companies are aggregates of people working together as one "intelligence" only each element is not entirely honest to each other... which is very much like schizophrenia.
Lets consider the facts. Publishers sell far more units on home consoles than PC, yet more games than ever are getting co-release on console and PC and fairly good quality ports too. Capcom have released virtually all their recent games, from franchises that have usually been console exclusive, on PC as well. MGS Rising will see a PC release, Batman Arkham Asylum was great on PC, Dirt 2 kicks ass in DirectX 11 on PC as well as most of the games from THQ and EA seeing QUALITY PC releases.
I think one reason for this is how the PS3 and 360 are pretty much level pegging at the moment, which forces most developers to simultaneously make games for both systems, whereas in the last generation most games were made just for the PS2. But this lowest common denominator game coding between 360 and PS3 pretty much makes a PC version by accident, it hardly takes any more effort to release a PC version.
The thing is in this age of convenience PC gamers have become a different breed as offer a typical console gamer a chance to fully adjust the graphics, resolution, field of view, control layout while balancing the importance of frame rate... they look at they've been given the manual to make a nuclear bomb. They just can't fathom the joy in geeking out getting a game to run absolutely perfectly and reach it's full potential but would rather just pay 50% more for their console game and work no questions asked.
So PC gaming is here - for this generation at least - but the nature of the market and console's dumbed down "ease of access" mean PC will always be a minority. Yet surely if PC versions are being spat out for virtually nothing by the nature of cross-platform development, it makes sense to keep selling them as even if you sell 1/4 as many as on PS3 or 360 hell it's money in the bank. It is also MUCH easier to release a PC game as you don't have Microsoft or Sony dictating every little thing about the game like disc licence fee nor dictating box art, content, price of DLC, connection priority, etc
I mean once a publisher has printed a PC-DVD they can just put it in a box and sell it directly to retailers.
But are there elements within Ubisoft and EA and other publishers who are deliberately trying to sabotage the PC market? No, I wouldn't go that far as money is money and they love that above all else. I think it's a case of frustration, they cannot market to PC because PC owners are far too savvy IMHO, since most of them depend on user run forums for setup advice this cuts marketing out of the loop and makes it harder to set up a brand that will keep selling even if the sequels are shit.
I think it's a case of live and let die (not the movie), if some douchebag suggests restrictive DRM no one in the publisher company is going to fight it as I think.
They are obliged to make a PC release to earn "that little bit more money" and I suspect the studios (quite separate from the publishers usually, like creative vs business) want a PC release as this can allow their games to reach their maximum potential so take that last half step with a PC build and by then publishers could hardly object to a PC release, what would the stockholders say?
I have no doubt that publishers would rather not have to deal with a PC release, mainly because it is a market they cannot control. It is easy with console titles to whip up hype but with PC games, if the sequel is shit there is no way anyone can spin it another way.