Despite the Mozilla leadership and the at times questionable investments, Firefox could never be more relevant.
We need a non-Chrome browser just as we need multiple operating systems with different design paradigms. It gives us flexibility, increased surface area for experimentation, and acts as an anchor for web standards (at least as long as non-Chrome browser share remains).
If running instructions should be free, so should reading information. Even if Chromium is itself open source, Firefox (and mostly Safari) keep Chrome from turning into a thin client that bakes in Google's self interested designs for the web.
I think Mozilla corporation should be acquired or merge with Canonical, Framework, or some other open-minded computing company. The leadership should build a strong "complete package" offering: laptop, phone, operating system, browser. That makes more sense to me than continued investments into weird side projects with little chance of developing traction.
And by weird side projects, I don't mean their efforts in VR or discontinued efforts in TTS. I think building open platforms in these domains makes a lot of sense. I just don't know if Mozilla should be the folks to do it. Their core mission - web - should be their singular focus.
The absolute best thing Mozilla could do, though, is spend money on marketing and partnerships to improve Firefox adoption and stem the losses. After they get growth back, the next thing to do is to develop stable, sensible revenue streams. The browser has become a commodity, which is why I think premium hardware sales could do the trick. Especially if it's "ethical" open hardware.
nrp (Framework founder's HN username), you should go have a chat with Mozilla folks sometime. Now isn't the time to consider an acquisition, but after you achieve growth and scale - please buy them out. Tout them as part of your offering, and use them as an additional funnel to drive Framework hardware sales.