They have 1,334 employees so a lot of it is fringe benefits... 30k for employer contribution of health/dental/vision/FSA&HSA program costs, $5k for sick leave payout costs, $5,250 training/tuition assistance budget. That's 40,250 per full time employee right there.

If you take the almost 9mil C suite makes and round down to 150 Million and divide by 1,319 employees (subtracting C suite) that's 113,700 per employee. Now if we withhold the benefits above, that's $73,450. But we're not done yet.

1% for workers comp, 6.2% for social security, 7% 401k match, 1.45% medicare, so a total of 15.65%. So we divide our 73,450 by 1.1565 and we are left with an average salary of $63,510.

They also have an additional retirement plan which almost sounds like a pension, but I couldn't find easy info on. If that's what it is, then that further reduces the avg salary by 10%. They also offer $2,500 adoption assistance and an EAP program that's not factored in.

I thought that was the point of non profits, you gotta funnel money to the people running it or you get looked at like a failure by the other oligarchs.

They serve 30,000+ libraries in 100+ countries according to Wikipedia, sounds like it might involve a lot of staff

They might be leeches but on the other hand you might be underestimating how much work goes into trying to keep library databases accurate