Maybe it's up to the community to stop this kind of behaviour. Maybe it's time to create another non-profit focused on Mozilla's goals, with a promise of having a more sane salary structure and just fork Firefox.
Nonprofits don’t fund something the size of Firefox (which doesn’t need 1100 people or now 1030 or whatever the headcount may be, but needs hundreds). They must give grants to get bigger grants as well as annual pledge drive donations from the long tail. They end up depending on the biggest foundations, which are tools of a relative-few billionaires.