A car with square wheels doesn't grow itself by adding three horns and a bubble dome...
So we’re now in the timeline where Mozilla is the liquid metal terminator in T2 trying to escape lava by shapeshifting, as you say, three horns and a bubble dome. Accurately put! And a hilarious image too.
We’d best hope that the antitrust lawsuits don’t kill the Google money that’s keeping their car fueled.
Firefox the browser is responsible for the vast majority (81%?) of the money that is injected into Mozilla annually.
You're moving the goalpost rather substantially. "It makes no money" and "it costs millions to maintain" -> it pulls in hundreds of millions per year, the majority of their income. They can afford to focus on it.