Microsoft wouldn't have anything to gain by forking Firefox, as Chrome was already dominant and Chromium is open source, with more resources going into its deve

Microsoft wouldn't have anything to gain by forking Firefox, as Chrome was already dominant and Chromium is open source, with more resources going into its development. Microsoft dropped IExplorer because they were far behind in their implementation and by embracing Chromium they short-circuited the development needed to produce a credible alternative. They had nothing to gain from Firefox and everything to lose, actually.