[BrendanEich]

As only big companies can underwrite development and then support ongoing/backlog compatibility quirks-mode work for a new engine, you are effectively saying "no" to other, higher-order values offered by new browsers than the engine.

Yes, I include Mozilla in "big companies" (2017 big revenue, which won't recur from what I can tell; big pay to chair too). Nevertheless, Mozilla has mismanaged Servo into an AR/XR only position where it won't go big, and Mozilla (for same reasons as MS) faces pressure to bail on Gecko.

Blaming little browsers for using chromium/Blink is blaming them for surviving.

Successful genes (e.g. for adaptive auto-immunity) tend to sweep. Think of WebKit and now (on desktop) chromium/Blink as such alleles. We may not like it but it happens whatever we may wish. I've chosen to fight for user rights at a higher domain of discourse: private ads, anonymous donations, ad and tracking protection by default. The time for a more radical new engine will come; it isn't now.