I am not sure that the rich get away with too many crimes...
...maybe the rich get away with the right number of crimes and the non-rich are beat down... mostly just processed as guilty rather than really tried at all.
The headline is not meant to really stake out a position on how many crimes the rich should or should not be convicted of, but that the huge disparity between the monied and the not is the actual problem.
Consider this: the only trials we tend to "see" are high-profile trialsa class of trials where the defense gets the protections it should, and where the prosecution acts like it is being scrutinized.
High profile trials tend to have competent defenses and judges and prosecuter's bending over backward to show the government apparatus in the best possible light.
Many trials do not... but we don't see or hear about those trials much.
And few crimes have real trials. Our current system is all about avoiding trials. Guilty people routinely plead guilty to minor lesser offenses while innocent people also plead guilty to lesser minor offenses. (Because it is often rational, as risk-assessment, to do so)