Sport is never 'Fair'. It is not about fairness = it is about excellence. Some people are born with a natural in-boilt talent, which most of us do not have. Yes, they still have to train hard, prepare themselves mentally and physically - hope against hope that no injuries interfere, find the right coach and back-up support team. Be the correct type of build for their sport - be in the right place to be able to get a good training venue.
Thank goodness for most GB Olympians, thanks to the Lottery funding they compete against the giants of Russia and USA, China, etc on a more equal footing. I still remember back in the 80's a GB Olympic Gymnast, married with a couple of small children - having to resign from his teaching job for a year to try to train in his sport, relying on benefits to keep him and his family. And, anytime he needed to attended a competition out of the country, he lost that weeks benefit as he 'was not available for work'. The stress that caused is quite obvious.
So, when those who all for a return to amateur status -prhaps they should think about that.