Earlier quoted context omitted.
The general quality of Firefox is worse, the tooling is more fiddly, some of it is written in languages which are not as familiar to Microsoft, it is considerably less straightforward to customize; and on top of this, performance is similar at best. Chromium has an architecture which lends itself to deep integration, and the default UI is much closer to Microsoft's own designs. > WebKit and Firefox are good starting…
What is Microsoft hoping to achieve? "Starting point" for what? Is MS foolish enough to believe they can have influence on the evolution of the web through github.com/google/chromium pull requests? Alternatively, has MS has given up? Perhaps they are content to rebrand Chrome and collect the bing.com seignorage from new Windows installs. Unless they fork, it's either naïveté or negotiated surrender.
I mean, "influencing the web" or otherwise, they accept heaps and heaps of patches that aren't about their core business. The Chromium project is really healthy.
> Unless they fork, it's either naïveté or negotiated surrender.
They can fork, but they probably won't need to. Even if they wanted to maintain an entirely separate shell, it is basically trivial to link such a thing in to Chromium.