Well that's the point. Nobody wants an x86 IoT device. They might want an x86 embedded device - where embedded is defined in the large, i.e. systems that control lots of integrated peripherals with user interactivity built into the device, and lots of complex built-in functionality.

But at that point you're usually looking at proper Linux-based boards with lots of standard IO - even HDMI output - in the ARM space, and Edison provides absolutely nothing over those. It might've provided something if you could reasonably treat it as a bog-standard x86 computer with some extra functionality attached.