A la carte pricing won't work with the model that they have right now.
A channel would have to have a fairly large subscriber base for the channel to remain cheap. Any channels with small subscriber bases will go up in price, much more than you'd imagine. In the end, you'd pick a few channels that you'd really like, but it wouldn't be all that much cheaper, and then the bulk package with all the channels would still be the better deal.
The main problem with TV today, IMO, is that there are too many freaking channels. There are many channels that could be combined into one channel, especially considering the amount of reruns some channels play. It's hard to make any decent advertising money when you spread your subscriber base so thin with so many channels.
I kind of miss the days where basic cable was all you "needed." Now, you have all these channels spread among different tiers and whatnot, having to pay extra fees for a particular channel, and in turn, you get 10 more channels you don't give two shits about.
On a side note: Is cablevision different from Time Warner Cable? The reason why I ask, is that where I live, my cable service used to be called Cablevision several years ago, now it's Time Warner Cable, and I don't have any Food Network or HGTV outages.
Edit: I guess they are different. Reading up on cablevision, they haven't had any particular relationship with Time Warner, but I specifically remember being subscribed to Cablevision ~8 years ago, and now it's Time Warner. Probably just my particular area.