I'm not sure that's really any different. Google advertised Glass ahead of time with a very strong message: quicker and easier capturing of fleeting moments. You don't take out your phone, hit the power button, unlock the screen, find the camera app, wait for it to respond, focus, snap, tap the preview image, tap the share icon, scroll through the list of apps, tap the Facebook icon, tap "share". You say "take a picture". You say "share on Facebook". It's 100% "please, no, not more computing".
Glass' success is tied to delivering on that core premise. If Glass is currently not fulfilling it, then its popularity is strictly in being a status symbol, meaning it's ultimately a fad, a fashion statement (that's probably why you don't really see it on the east coast). Without fulfilling that promise, it's doomed in its own time as well.
Your examples absolutely will be failures and it is for this reason. Pedometers and wifi enabled shoes, the way I've seen them implemented, cause the user to have to do more work. The user can't just put them on and run and forget they are there and their running will improve. The user has to configure it with their system. Then they have to remember their login every time they want to look at their charts. Figure out how to make sense out of the chart. Should they be running farther, or would pushing faster be better? A graph of distance over time doesn't tell you that. The product creates distracting work for the user and THAT is why it fails.
Make that pedometer upload to a server and have a physical trainer email the user personalized instructions on how to improve their running every week and you have a pedometer that means something to users.