As a hobbyist magician (of 45 years!) but a professional musician and music teacher, I can tell you that "competitions" literally stamp the life out of an activity. Bear with me as I point out the musical equivalent of the magic contest.
For years I taught school bands (the marching and concert types). When I was in high school in the 1960's, most marching contests didn't even exist yet. By the time I graduated from university in 1974, I saw a huge proliferation of them, and the number now grows every year. For one thing, the "local" competition is an easy one-day fund raiser for band programs, and more contests mean fewer bands to compete in each one, so "more winners"!
So, instead of learning music and having a variety of entertaining shows, school bands have narrowed their focus to ONE show of 8 to 9 minutes, which they "run into the ground" by practicing from July 20 to November 1! They perform only this show at all their home and away ball games, and their home crowds are bored to tears. Heck, the musicians are sick of it by the time they get it all learned, and then they gotta do it for two more months! Meanwhile, their musical chops for reading and emotional interpretation go down the drain, sacrificed on the altar of "perfection for making a I at contest." (Yes, I mixed metaphors like crazy, but you get my gist!).
Now I see "art contests" where oil painters submit their latest works for judging to see "who is the best." Who cares? Only those who buy and sell the art, as competitions attract those who value only the opinions of others rather than their own.
I have no doubt that competitions can and do set deadlines and then goals to be reached. But, in doing so, they can be taken to ridiculous lengths that destroy the intent of the creation in the first place.
Music, art, literature, cinema, sculpture, architecture, photography, theater, dance, and (yes) magic CAN all be fine art in the hands of creative people. At their best, they lift the human spirit by touching the emotions and making the perceiver "feel". At worst, they aspire to merely entertain.
Why denigrate these arts to the level of sports/games to have winners, and therefore, losers?
One man's opinion...