With due respect, shooting is not a physical sport with body contact like soccer, rugby and so on. If anything, it's one of the very few sports where the disabled can actually participate on almost level grounds. Thus, it's that kind of sport that will be expected to go the extra mile. Nobody expects a paraplegic with an arthritic spine to bid for a place in a rowing team, if you get my drift.
And from what I've overheard today, it's the standers that make the sport. It's the standers that sorts the men from the boys, etc. "Take away the standers and you have destroyed the essence of the sport."