Tapping the Power of the Feature Phone

I was recently pointed to the idea of using voice interaction to provide intelligence in the still 63% of cell phones today that are not 'smart' but are dubbed  'feature phones'.  An interesting idea.   More on this video.  Via Almira Labs. Will the prevalence of smart phone become universal, or will there always be room for simpler phones?  It does sound anti technology progress, but I think there is real room for this idea.