As TAR notes, a lot of people no longer have cable tv.
services. Anyone who doesn't have one of those obviously doesn't give a rats ass about live sports and only watches clips/highlights if anything.
Most of the people in my generation (+/- 40) have cut the cord but still have a YoutubeTV or Hulu because we still care about sports. Above us, still have the cable connected and below me most of them don't really care and would rather do something other than sit in front of the TV for four hours.
I am sponging off relatives, but I have used it for watching Premier League games.
The more informative information from the Matt S. site is the kickoff times. To some end, channels do dictate that. ESPN staggers their games on Saturday nights between their litany of networks. Fox does as well. I imagine NBC will do the same with Peacock and the Big Ten.
The topic probably underscores why ND has been willing to be below market on TV. ND and NBC obviously collaborate on start times to some extent and announce them well in advance. A schedule where late season games start a bit earlier and everyone can plan travel in accordance with set kickoffs is very conducive to fan base that disproportionately travels to games. A six day hold on an ND home game would be very poorly received. If ND went out to the highest bidder in Bristol, that'd be the trade off.