I never said rap isn't competitive I'm saying this idea that rap is the only competitive genre where artists openly beef and have issues, even at times to the point of violence, with each other simply isn't true.
And it tends to be the rule not the exception that the top artists have issues with each other because of how small those spaces are. Go through any genre and you'll see the same petty shit back and forth. The main difference with rap is that it makes into the actual music more, but that don't mean the same animosity doesn't exist between artist in other genres. Shit I already mentioned in this thread 2 of the biggest pop stars in the world spent the good part of the last decade openly hating each other.
Look at rock and roll and take a look at how many bands openly trash other bands and say they can't play, aren't talented, write trash music etc.