Don’t be silly!
Why would any jockey on a horse who is clearly on top of an opponent and as you admit yourself, highly likely to beat that opponent, waste time trying to deliberately interfere with that horse and quite possibly impede his own path to the winning post when it’s highly likely other horses are coming with a fast finish on the outside?
Sometimes horses are unlucky in a race, it happens all the time, part and parcel of the game I’m afraid.