An idea appeared in one of the artist forums I belong to about the future of art hanging on people's walls. Something I would call "iArt."
The thought is: suppose instead of paintings or photographs (or prints or posters showing these), people hung flatscreen TVs on their walls -- flatscreens designed to be "on" all the time. Then the flatscreen owners would subscribe to a service from which they can download images to display on the screens. Then, whenever they're ready for a change, they'd flip through images and voila! A different picture!
Most artists would say iArt would lose much of what makes original art so desirable, especially originals with lots of texture or subtleties. But for those who are not that particular, this could be another affordable way (besides prints or posters) to obtain art in an affordable way.
And if I had more entrepeneurial skills than I have, maybe I'd be the one to start an art subscription business!