I would suspect that if "mama cow" doesn't "take" from one, she won't from others either. She becomes someone's meals. Also, once the critter becomes a steer instead of a bull, I would suspect that he puts on much better meat for selling at market and becoming steaks.
We never saw it with our Hereford bulls, but some of the others might get territorial and start fighting the other bulls. Bulls are too expensive to want to risk having them seriously injured.
When we were on the farm, my father-in-law had about 250 head of mother cows and we would also run anywhere from several hundred to over 1000 yearling steers and heifers to sell in the Spring. More money is made on those yearlings than on the calves from the mother cows.
