Fragmentation of the syndicated markets is a perfectly plausible argument. It's common knowledge/fact that the markets were fragmenting as DS9 aired. TNG was the number one rated show throughout the majority of its run, particularly later on. DS9's numbers were dwarfed by TNG's, yet was still the number two rated show in syndication. It was either Xena or Hercules that topped it, can't remember which, but as the number one rated show at the time, it too was far from getting the numbers that TNG once enjoyed.
Dependent on coverage, network shows should garner higher numbers by virtue of the fact that they enjoy a more stable broadcast platform. Same time, same place, week-in, week-out.
Re the gamble, seven years of TNG was a long time, but a successful seven years ultimately. The lure of more of the same would have been obvious, and given that this is Berman that we're talking about, the fact that we got anything remotely different is a minor miracle in itself.
Dependent on coverage, network shows should garner higher numbers by virtue of the fact that they enjoy a more stable broadcast platform. Same time, same place, week-in, week-out.
Re the gamble, seven years of TNG was a long time, but a successful seven years ultimately. The lure of more of the same would have been obvious, and given that this is Berman that we're talking about, the fact that we got anything remotely different is a minor miracle in itself.