> So what other industries do you know of that buy ideas? I can't think of any other than the book industry...
It seems that the time is ripe for a digital, networked app equivalent to be replacing books as a medium for ideas... something like Amazon's kindle library, but more revolutionary (as opposed to evolutionary).
What, you mean like the internet?
no, something more like wikipedia + lulu + ?
Lots of industries buy ideas... They just prefer to do it in the "protected" form of purchasing / licensing patents.
"So what other industries do you know of that buy ideas?"
It depends on how you define an idea.
Toy and game makers.
I can't think of any other than the book industry (and perhaps other art-focused fields), really...