Sport nowday is a combination of everything you wrote but the truth is that it's nothing new. It always was like that. There are for example many ancient Greek sources which are describe cheating, bribing and even organised doping durring sporting events. Vision of sport as a rivalisation of gentlemen is in fact a myth from the Victorian Period. It was an effect of the imagination of the of the English and French nobility, artists and scientists living in the XIXth century about the Antiquity and the Middle Age. Sometimes it was even a special and intentional creation about that.