[Stoudman]

I would imagine since Blu-rays are produced and work in the same fashion as DVDs, in fact being more efficient than DVDs, that it's the editing process that takes so much time, effort, and money. Cleaning up the picture to give it the best quality for the high definition format is probably the one thing that costs the most, because in terms of creating blu-rays and transferring data to them, the process is about as cheap as the process with DVDs.

EDIT:

In response to your question about TV on blu, I doubt it will be economically sound for any company to bring the older shows, especially ones filmed in 4:3 for television to blu anytime soon. We're just now seeing tons of the more rare TV titles brought to DVD, because only now has it become economically sound to do so. Companies can now deliver DVD sets of TV shows at prices that the consumer will gladly pay...but if they put all that money into editing the TV shows to clean them up and deliver a high def picture on blu, not only would it take a lot of time, effort, and money, but subsequently the price for the blu-ray edition would be so high you wouldn't even want to pay it. I'm fairly sure that the companies involved KNOW that, which is why you're still seeing far more TV to DVD releases than to blu-ray. Unless it was recently made and shot FOR high definition telivisions, chances are they aren't going to make any attempt to bring it to blu anytime soon. It took 5-10 years for DVD to get this far with TV shows, expect a similar time frame for blu.