Where did they go wrong?

Casual consumers couldn't see justification for the increased price/number of screens, because there was little unique software that integrated the two. While there was considerable developer enthusiasm for the device, little edge-specific software exists, because the company provided no support to developers. Entourage also missed the opportunities (pointed out by some here) to exploit a variety of markets where such a device would fit nicely. The management of the company and marketing effectiveness was legendary in its lameness.

At this point I wouldn't disagree that the primary purpose for the company was to allow C-types to siphon venture capital into expensive sport cars and other luxuries.