Next year 2015, it will be 50 years since colour became the norm for US television shows I believe. A couple of years later here in the UK. Therefore anyone who remembers first run broadcasts of monochrome programmes would be in their late 50's or into their 60's & 70's. Not really the target audience for DVD companies & shrinking fast. It could well be that the next few releases will be the very last b/w series to be released.
In my household, every first run broadcast was in black-and-white until 1978--when I bought my first color TV! (My parents didn't have a color TV until I got a new one in the mid-1980s and gave my 1978 one to them.)
Still, since baby boomers are the ones who are buying most of the DVDs and other physical media these days, maybe we are the target audience for these companies.
It's too bad there aren't a few baby boomer hedge fund billionaires who happen to be fans of old TV shows who can start up a company and start licensing TV shows by the dozens from the networks and studios and give them proper distribution. Sadly, the type of people who become hedge fund billionaires are not the ones--like us--who were glued to the set when they were kids. They wouldn't know "Maverick" from "Mork and Mindy."
If I were a billionaire, I doubt I'd even care about old movies and TV shows, but if I were the person I am now and came into a billion I'd want to finance the restoration and distribution to the world of so many old movies and TV shows (and musical recordings) that I'd be busy until I died. I would simply buy up the rights to tons of things at exorbitant offer-that-can't-be-refused prices and make them available regardless of whether there was a sufficient market for them or not. Would I run out of the billion before I died? Depends on how many films and TV shows you can buy up the rights to in the time I have left. But in real life, when actual billionaires collect things, it's usually one-of-a-kind art objects that no one else can have. I mean, when Steven Spielberg was in contact with Orson Welles, he made no offer to finance any of his film projects or finish the filming of THE OTHER SIDE OF THE WIND. Instead he used his money to buy the sled from CITIZEN KANE and pestered Welles with questions as to how he got such and such a shot. Tarantino, at least, who is no billionaire like Spielberg, has actively worked to restore and distribute films to audiences.