The traditional argument against this from Clay Shirky and probably others is [ADDED: mental] transaction costs. As soon as you're confronted with having to make a decision about whether the content behind a headline is worth paying for or not the mental calculus will often be "no."
The relative recent popularity of all-you-can-eat streaming of music and video vs. a la carte purchases would seem to support this view--although one could also argue that digital music and video purchases aren't really "micro."
The relative recent popularity of all-you-can-eat streaming of music and video vs. a la carte purchases would seem to support this view--although one could also argue that digital music and video purchases aren't really "micro."