I typically buy them for other reasons than for using with the bike (i.e. business travel) but they are also useful on the bike.

In my case, the Cyclemeter app at $5, the Blue S/C sensor for speed and cadence ($60), the RFLKT+ for $129 (total of $194) give me the feature set of about what the Edge 1000 does for $650. For that, a consumer can buy a fair number of battery cases..... Also worthy to note that an Edge 1000 won't have any connectivity on the ride unless it is tied to a phone. The opposite case is not true (obviously). When the Edge 1000's full feature set is not available until you have the competitor on board (smartphone), then what does that mean for long term viability?

This is exactly what I was saying - the difference between a PND based bike computer and a smartphone based bike computer is pretty much in the "taste great/less filling" state. There are tiny differentiators from one approach to the other, but there is no longer an obvious best choice between the two. That is going to be extremely disruptive to the PND based suppliers. When you factor in cost - which is a big one - PND based devices are in trouble.

J.