I'm guessing that the issues have something to do with the management structure.

If your CEO is delusional, it's usually possible to reign him or her in... From what I understand, Neumann had some special votes that basically allowed him to fire the board at any point.

I imagine that anyone with a pragmatic mindset willing to ask "wait, but the numbers are..." was pushed out of the picture either explicitly or implicitly by the power imbalance.