They’ve detailed their whole concept development process for their proposed “Charmr” prototype (I’m sure the working name must have been iDose).
It’s a really outstanding case study of rapid prototyping. They even produced an informercial for it that tells the story in an emotionally compelling narrative.
This piece on the Economics of Free does a nice job of summarizing how people thrive by giving it away:
So, the simple bulletpoint version:
1. Redefine the market based on the benefits
2. Break the benefits down into scarce and infinite components.
3. Set the infinite components free, syndicate them, make them easy to get — all to increase the value of the scarce components
4. Charge for the scarce components that are tied to infinite components