That is your fault as far as Voom being mentioned in other threads. Comedy Central is also a Niche channel. What is your point?
The Daily how regularly has over 1 Million viewers. 3.6 Million watched Barack Obama's appearance on the Daily Show. No Voom channel ever had close to that many viewers. Heck, I'm not sure they ever had more than 1 million subscribers. It may be unfortunate, but majority rules in programing choices. I'm personally against a lot of the channels many want win the next round. Fox News, Fox Buisnnes, any premium (I don't sub to premiums), MTV, VH1, CMT, Nick, and even more I'd be disappointed to see. But they have high ratings, so they are likely to come.
As for repeats, perhaps I'm mistating the point. Part of it was the schedule of repeates. They would show the same episode of something 4 times or more a day. The same 2 movies would be repeated in the course of 1 day. Also, it was the lack of new programing. There was occasionally something new, but it was a lot more rare than on HDNet Movies, TNT, TBS, and ABC Family. Also, take the way they show repeates. TNT just had a weekend of Lord of the Rings. Voom would have repeated the movies every other week. TNT has not shown them for months and won't show them again for months. To the point that even after watching them this weekend, new time it will probably have been long enough that I will catch them again.
And yes, other channels deserve to suffer the same fate as Voom, like Smithsonian. MGM and Hallmark Movies need improvement as well. WFN should also go as it probably isn't a ratings bonanza, either.