Simple: 1) Simpletons want an iPhone/MacBook and end up with Safari or Chrome. 2) Those who can't afford one got an Android/Windows and either use the native

Simple: 1) Simpletons want an iPhone/MacBook and end up with Safari or Chrome. 2) Those who can't afford one got an Android/Windows and either use the native browser or Chrome. 3) Everybody else uses Firefox, at least on their computer. There's your 10%.