My ex-wife is a library CEO. It requires at least one bachelors degree and a masters degree. Anyone with those credentials will make 80K at a minimum anywhere. If you worked out her salary by the hour, she didn't make any more than I did. She was there 10 to 12 hours a day six days a week and worked on grant requests etc while home.
I would expect that salary for that level of education and workload.
IT SysAdmins are paid by demand and depending on the area, the demand can be quite high, so if you want someone who can do it, you gotta pay.
I would say most of those people have a great deal of education and expertise...some likely do not.