I think
Mad About You is a classic case study of timeslot success that worked to secure ratings on broadcast TV but don't carry over into TV on DVD.
It was an OK show sandwiched between two better shows, and not up against great competition. So in the broadcast world it got very good ratings because it was inoffensive and it wasn't really worth clicking away from NBC for 30 minutes while it aired. Made nice background noise while people got a sandwich. The plots weren't so dense of the dialogue so sparkling that you had to pay really close attention for fear of missing something.
But when people have to spend money to own it, and it doesn't have a great lead in or follow up on disc, a lot fewer people were interested. TV on DVD defies the law of intertia as it applies to couch potatoes.
I think
Night Court clearly suffered from the fact that the first releases were of the early seasons when hardly anyone had discovered the show and the ratings were lukewarm. The glory days of the series, the
Night Court most people fondly remember, were roughly seasons three through seven or eight - basically the Markie Post years. I'm not surprised that the first couple of seasons underperformed or that the studio misread this as a lack of interest in the show.
Regards,
Joe