The real death knell is that Microsoft decided not to go with Mozilla in building the relaunched version of Edge.

That would have been a very fruitful relationship, but they couldn't make it work. My understanding is - albeit its second hand - that they really didn't want to simply jump to Chromium, but Firefox proved far more complicated to do what they wanted to do.

Ultimately, Microsoft Edge went from a pretty good browser to loaded with of things I dislike, which is a real shame, but I know it would have significantly boosted usage numbers of Firefox and its engine, which in turn would drive more investment into Firefox itself.

This has always been an issue with Gecko and the Mozilla codebase. It was a massive blow to the Mozilla community when Safari was released using KHTML instead of Gecko. Google then adopted WebKit (itself an evolution of KHTML) for Chrome, another slight for Mozilla. This despite prominent ex Mozilla developers like Lisa Melton, David Hyatt, Ben Goodger, and others being involved early on with Safari and Chrome development. Even Brendan Eich went with Chromium and not Mozilla technology for Brave.

I really really wish they would have gone with webkit, even though they could have with some effort used gecko. Just giving up and going blink engine is awful for diversity in browser engines. I don't have much hope for efforts like ladybird, as they're just too small and browsers are a huge ecosystem now.

Microsoft was (and is) interested in Electron. They used it for lots of stuff like MS Teams (which is now using their WebView2 control), VSCode, Outlook, and their Graph toolkit.

> Microsoft Edge went from a pretty good browser to loaded with of things I dislike

Yep. It was great. Now it's a kitchen sink with everything thrown into it and it's disgusting.