> Then it switched to being a Chromium based browser in 2013 so they could utilize the Chromium plug-in ecosystem. Opera switched to Chromium because they didn

> Then it switched to being a Chromium based browser in 2013 so they could utilize the Chromium plug-in ecosystem. Opera switched to Chromium because they didn't consider it profitable enough to keep developing their own engine, and laid off a large portion of their browser developers. It was entirely about money and nothing to do with using Chrome extensions.