I rely on Mozilla just fine. Have used Firefox for a decade and will continue to do so. I am not about to accept Google as the sole provider of the web like you are so eager to do.
I think GP just like me wants neither Google nor Mozilla.
Google needs to have their arms tied for a bit. Their fingers are in every single pie, taxing the entire tech sector.
Likewise, Safari shouldn't be the default iPhone browser, Edge shouldn't be the default on Windows, and no company should be able to scare users or force their solution as a default.
The browser space would be fine without Google.
Mozilla just made technology that nobody else wants to use.
It's not that nobody WANT to use it, but more like nobody CAN use it. Are you mentioned yourself, most developer only test against chrome/chromium so using servo would be commercial suicide. It not really a statement on servo vs chromium on technical level, but of google vs Mozilla market dominance.
For me it seems we are past peak "works only in IE^h^hChrome".
There was a time 5 years ago or so when several interesting websites only worked in Chromebut I haven't seen that problem in a while and the last website I had to deal with that only supported Chrome was a product that a company I work for used but threw out earlier this year.
Yes, some things still mysteriously work slower in Firefox or have some features disabled for no good reason which is why consumer protection agencies still have work to do but I haven't opened Chrome for weeks now I think and last time I did I think the thing I tried to access was just as broken there.
What could possibly go wrong?