So, basically you want better management for firefox, and hope funding to magically appear out of thin air?
Are you sure that the loss of market share is due to mismanagement? Could it not be due to a competitor with unfair advantage? I mean the fact that even MS stopped their own development would suggest that to me.
So the concrete point you have against management: it is expensive. Does that explain the current situation? What if the CEO had a 300k salary, would that fundamentally change anything?
Edit: as a metter of fact, I also believe that a change is required, but I would look at the funding side, to diversify it. I would look into government funding (multiple governments), license merchandise, ask for individual donations, partner with more companies to sell rebranded versions of their products/services like with Mozilla VPN, etc.