I'd agree that there's no good reason to start your own renderer from scratch, but I'd argue that there's a great benefit having a competing rendering engine (i

I'd agree that there's no good reason to start your own renderer from scratch, but I'd argue that there's a great benefit having a competing rendering engine (in this case, Gecko). If Firefox (and, by extension, Gecko) were to die, or fall into obscurity, there would be nothing stopping harmful proposals from being added to various web specifications[1], which is what I was getting at. [1] https://mozilla.github.io/standards-positions/ https://mozilla.github.io/standards-positions/