Does anyone have data on the departure of executives at other companies, past or present? Of course the reaction is that this is something like an exodus, but I would love to see data on exec-churn at similarly sized companies for comparison's sake.

I don't think there's a public dataset for this, but would be a fun project for someone to crawl and figure out a number.

My best offer is here Yahoo. Just before and after the announcement of acquisition, there was a bleeding of top executives from Yahoo.

Maybe Enron in their final years?

The thing is: they have an obscene amount of capital just to keep their narrative alive. Sunk cost fallacy is not a concept that exists in the world of their investors.