Safari's iOS exclusivity and resulting ~18% market share is probably the only reason Chromium based browsers don't have 95+% of the market. Some stick to whatever default they get but I think most would just immediately jump to Chrome(ium), with a very, very small minority like me going for Firefox. The mobile segment doesn't concentrate techy users like the desktop does so Firefox would see even lower (that the current ~3%) figures there.
A world absolutely dominated by Google's control over the browser scares me more than Apple's control over the AppStore.
A world absolutely dominated by Google's control over the browser scares me more than Apple's control over the AppStore.