For the short term ARMH will probably do OK because Apple's loss appears to be Samaung's gain and the mobile market is still growing. But this will change when Intel has empowered an ecosystem of companies like Lenovo, Acer and others to enter the market with world-class smartphones and tablets offering faster and more feature rich devices using Intel silicon. Further, devices with x86 have the option of using 64 bit W8, Android, Ubuntu and other flavors of Linux.
One day Apple is going to want to run MAC OS on a mobile device and x86 will be the easiest way to achieve that. In fact, giving consumers the ability to run MAC OS on a mobile device would be one of the most effective things Apple could do to compete against the Samsung which is even better at making smartphones than Apple. Samsung has no legacy OS and tons of apps to offer customers like Microsoft with Windows 8 and Apple with MAC OS and all of it runs native on x86.
Intel is going to take a huge piece of the mobile market.