Excellent point about consumers attributing value to things they can hold in their hands. The same is true of written content; in my experience information on p

Excellent point about consumers attributing value to things they can hold in their hands. The same is true of written content; in my experience information on paper is a lot easier to sell than the same information hosted on a website. The attraction of moving to digital media is clear (instant delivery, no overheads, easier to control copying etc) but consumers can be reluctant to pay for anything they can't touch.