Perhaps the next big market for fiction are all those people on their daily commutes with cell/mobile phones in their pockets and time on their hands.
In Japan currently there are several best-selling authors who write serials for people to read on their phones. The rest of us will likely follow those tech-leaders.
I have recently been in contact with people who are getting the technology and web-sites together to enable written words - stories, serial episodes etc.- to be bought for pennies and read a few thousand words at a time on phones or other mobile devices.
I am probably going to try out some short stories with them, see how it goes.
hopefully it will all come together in the next short while.