Chromebooks are not a gimmick they are great laptop replacements for older folks who spend majority of their time on the web. As Apple keeps improving its own chips I have no doubt an iPhone can run a fast stable "chromeOS like" environment. Now how Apple would feel about canabalizing their iPad lineup by doing that is a different story but a chromebook/phone combo would do great in the markup imo, especially with how many older people there are that already know apples OS interface