And the developer experience in other browsers (save for maybe Firefox) are vastly inferior to Chrome's dev tools. Firebug in firefox used to be the best, but even with Mozilla's new efforts at the developer edition of Firefox, the experience is still poor. Lack of correct support for sourcemaps, performance, and general UI polish of their tools are still lacking.
Another point I feel should be made is that IE still doesn't have a native Max OS or Linux release. This is an embarrassment to Microsoft, and its why I still don't take anything they do seriously on the web. If you're going to create a new browser, you should at least make it accessible to most of the devs -- many of whom don't even use your OS anymore.
Chrome also has a few very useful projects, such as Chromium, node webkit and Electron (what slack uses). Where is this kind of support from the other browser vendors? Why doesn't Apple have a fully integrated native browser development envrionment for Safari? Why did Mozilla's FireFox OS die on the vine and why haven't they come up with something like Electron? The executives and senior technical leadership at these projects and companies should be embarrassed.