we seem more willing to spend money on good fruit jam than on good software
Great point. I can also see it from the other end where many more of us willing to pirate a software or digital product (songs, movies etc. ) compared to stealing a bottle of jam.
Something about the lack of a physical thing in hand makes your mind value it less maybe? If we all had a scented USB drive based key to use a software there's a change software might be perceived as mure physically tangible? 😛