I'm convinced Mozilla is purposefully engineered to be rudderless: C-suite draw down huge salaries, approve dumb, mission-orthgonal objectives, in order to keep Mozilla itself impotent in ever threatening Google.
Mozilla is Google's antitrust litigation sponge. But it's also kept dumb and obedient. Google would never want Mozilla to actually be a threat.
If Mozilla had ever wanted a healthy side business, it wasn't in Pocket, XR/VR, or AI. It would have been in building a DevEx platform around MDN and Rust. It would have synergized with their core web mission. Those people have since been let go.