Do any of the Chrome forks explicitly work together? The standard IT pattern seems to be a dominant corporation vs a ragtag of small groups. The browsers wars have already gone through this cycle and the ragtag group won the last time. But there were also lots of speciality browsers built on IE and it's hard to tell where any new Chrome fork browser stands.
Imagine a world where Microsoft, Mozilla, Google, Apple were cooperating and building interconnecting blocks of a modern browser since the early 2000s. Instead, MS discontinued Edge, Mozilla has only 2% market share (still big in global terms), and 90% of the internet traffic is basically running on Chrome. No innovation is possible that is not in-line with the direction the upstream, or at the increasing cost of constant catching up to updates.