An anonymous reader writes: There is an interesting theory why Mozilla apparently had no choice but to go with a Chrome-like user interface in the next version of Firefox. It seems that Mozilla’s users are not quite as loyal as market share numbers indicate – Firefox may be gaining users from IE, but it may be losing users to Chrome at a similar pace. Now, it appears, Mozilla hopes that a Chrome-like interface will stop bleeding and convince more users to stay with Firefox. If Mozilla can’t stop the migration, it could be drowned by Chrome in the long run.