Not really comparing apples to apples here.An argument that's as old as the industrial revolution.
The Big Three automakers have a regulated, statutory right to replace strikers. So far they haven't. That speaks volumes, and again its not the only speaker, to the "toss 'em out; we can hire others" argument.
College football and basketball teams completely turn over their rosters every 3-4 years, and on an even more accelerated schedule for a majority of the roster. And yet the beat goes on without a hitch. If the entire labor force of the Big Three Automakers turned over every 3-4 years, it would be chaos and they couldn't effectively make cars. That's part of the point. I would guess the Big 3 aren't replacing the strikers because thus far it isn't cost effective and good business to do so. Making cars is a little more complicated than staging a football game.
Again, you could remove the top 300 college football players from the game and revenue would hardly drop at all. The NCAA basketball tournament these days is more or less a bunch of anonymous players that nobody will give two [ Finebaum ]s about once they take their jerseys off (relative to what it was 30-40 years ago), and how has that affected revenue?