This is the argument I hear every time, and completely glosses over my last sentence. People have been trying successfully for thousands of years to stamp out corruption. It's a part of human nature.
In the case of FIFA (and reportedly) the IOC, delegates were given gifts. How do you suggest stopping the royal family of Qatar (who we have no jurisdiction or control over) giving a FIFA delegate a rolex? Short of putting an implant in everyone's head uploading everything they do, say or think to some giant all-seeing mainframe, I doubt we can track the actions of everyone and therefore stamp out corruption.
It's not about accepting the practice of corruption, it should of course be punished when proven. It's about accepting that it's human nature. You're never going to stop murderers murdering, or robbers robbing. People have been doing these things since the dawn of our existence.
I found some interesting reading around this subject [1].
> Earlier Enlightenment-era thinkers looked to society to bring structure and civilization in order to restrain naturally corrupted mankind from chaos. In 'The Confessions', as in his other works, Rousseau takes an opposing view. He asserts that man begins in a pristine, uncorrupted state at birth, and gradually becomes corrupted through the assertion of society upon the individual. The true state of nature, says Rousseau, is uncorrupted
Whether you believe society corrupts the uncorrupted human mind, or that humans are born corrupted is up to you. I believe that no matter what, corruption is part of us, and part of being in a society.
[1] http://www.academia.edu/1922627/Rousseau_on_the_Loss_of_Iden...