Replacing it will be a gargantuan effort, but until it's truly dead every attempt to do so won't even be given a chance due to appeals to "just use firefox" or to stop diluting the efforts of the firefox team.
Firefox as it stands is a zombie sucking the efforts of good talented developers away from hypothetical new hopeful things.
As others have said, it's also a backstop for Google against antitrust suits. Firefox surviving without any hope of ever thriving is the ideal scenario for Google.
Replacing it will be a gargantuan effort, but until it's truly dead every attempt to do so won't even be given a chance due to appeals to "just use firefox" or to stop diluting the efforts of the firefox team.
Firefox as it stands is a zombie sucking the efforts of good talented developers away from hypothetical new hopeful things.
As others have said, it's also a backstop for Google against antitrust suits. Firefox surviving without any hope of ever thriving is the ideal scenario for Google.