There is a reason why rich people tend to get away with so much and when you are poor and can't afford a good defense, you are screwed.
Michael Jackson, O.J. Simpson, just a couple of names that come to mind.
But here's we're talking about publicity of the allegation and trial, not that the person was famous before. In this case the trial was way too politicized to be fair by any reasonable stretch of the imagination. Even the judge said so.
Why didn't those responsible for the 20008/2009 financial crisis go to prison?
It depends if they committed actual crimes or not and typically, politicians don't send people who bankroll them to jail - it's bad for business, their own business.