I don&#x27;t think they&#x27;ll produce their own ISA.  They have an architectural license from ARM, so why bother.<p>But, Intel doesn&#x27;t exactly produce chips that are helpful to Apple.  Since Apple switch, Intel has gotten rid of third-party chipsets.  This removed a lot of customization options and basically made life easier for Intel since they produce a fixed set of chips and you have to take them.  Also, Intel&#x27;s market differentiation of chip features probably doesn&#x27;t help.<p>Apple wants to provide a custom experience, and Apple building their own PC-class ARM chips will allow that.<p>[edit: also Intel&#x27;s paying people to produce Macbook Air clones probably didn&#x27;t help]