Its a very competitive climate and Snapchat needs to keep innovating, but I wouldn't write Snapchat off too early.
They could profit from Snapcash though. How about integrating some Patreon-esque function where you can unlock private feeds by payment/subscription? For some art-forms that could really work out well.
Spectacles look exactly like Google Glass to me, though with a bit less creepy human thumb marketing... http://static2.businessinsider.com/image/5179166eeab8ead0440...
All of the current surveillance capitalism companies seem to be flailing when it comes to doing anything beyond selling ads.