The idea that the Lytro changed photography is laughable. It has changed nothing. No one needs, or wants, what they're selling. More marketing hype.
I don't use digital at all, but I applaud Lytro for trying something a bit different. Really, up until this point digital photography is mostly a replica of film photography. Most of the software you see for sale on camera web sites is about making digital look like film. Even the race to affordable full frame is just a race to an arbitrary size created by a film company. I like that Lytro is making something that's using digital's potential to be different to film, not just try to re-create it.
Lytro is doing some neat stuff for sure, but in my mind... it's a feature of a product, not a product itself.
I feel it should be incorporated in other cameras just like autofocus, high ISO, built in HDR, auto scene lighting, the 'miniature look' filter, etc. But it's not a stand alone feature that would make me shell out 1.500 for a camera that has it as a unique selling point.
So they're probably better off licensing it to others.