That is what killed it for me years ago; too little football interspersed with too many commercials. Rather than watching football, one can only have it on while doing something else (including WATCHING something else).
Add to the aforementioned, the fact that the game has become too sterile. Very few “winter” games played in the elements. that made football unique. Seems like everyone’s in a cozy dome. No mud, no snow, no rain, no wind, no fun.