I'm not saying anyone has made this accusation to be sure.
However, I'm sure the league would hope that certain teams continue playing because they play in a way that is more "marketable", but I cannot subscribe to the "zebras" ever being told who has to win, etc.
After all, these refs are successful in their chosen careers outside of football, and how can we expect them to throw away their reputations for integrity on what is still a part-time career?
What I have noticed about PIT-BAL in particular is that both teams play hard-nosed, AFC North football, and neither team ever gives up at all! This leads to the kinds of plays that used to occur many years ago, but have diminished in the new Arena version of the NFL.
Makes for some borderline and certainly controversial calls.