Man City got away with it because they selected two of the three people on the "impartial CAS appeals panel" who overturned the orginal decisisions.
I never knew they'd rigged the panel though not surprised and the 5 year rule also played its part.
'UEFA takes note of the decision taken by the Court of Arbitration for Sport to reduce the sanction imposed on Manchester City FC by UEFA’s independent Club Financial Control Body for alleged breaches of the UEFA Club Licensing and Financial Fair Play regulations.
UEFA notes that the CAS panel found that there was insufficient conclusive evidence to uphold all of the CFCB’s conclusions in this specific case and that many of the alleged breaches were time-barred due to the 5 year time period foreseen in the UEFA regulations.'