Money talks. None of these “sports” include real competitors. This is just affirmative action for the rich.
I do agree the rich can buy outstanding horses, and have trainers to care for them.
Saying that, you do have to be a great rider to jump horses.
My horseback riding is limited to team roping.
My wife competes in Eventing and Fox Hunting.That is jumping in an outdoor environment. Speeds are a lot faster.
Anyone that can do that is an exceptional rider.