They are an easy target, but I would argue justifiably so. My ( supposedly non-profit mind you ) university had a president, who paid himself a salary in line with regional bank's president; he was kicked out. Current one is paid less but still high 6 figures. And this is not some prestigious university, where you could reasonably argue he really, really deserves it, because he is running it so well.
I don't know a full answer, but I believe we can start with administrators and work our way through the system. Something has got to give. This system cannot stay as it currently exists.