Any organization with a large, protected income will tend by default toward administrative bloat. It's the same in government, at Harvard, at Google. Unless you take explicit measures to avoid it, you'll overhire.
And then you have a second problem: all the unnecessary people you've hired become a drag on the necessary ones. The unproductive people need to seem like they're achieving something, so they'll organize meetings to waste the time of the productive ones.
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