@sozialwelten Interesting. Hope it will work.
Once there is a user base, I can imagine that companies would be willing to participate. If they are convinced their products are better and want to signal that confidence smaller companies may adopt it. Maybe not relevant for books, but the costumer feedback is also valuable.
@VictorVenema @sozialwelten companies could give raw open data, but the persisted ids and data would be under control of the community, possibly referencing other authorities ids à la #Wikidata. But, from the experience of #OpenFoodFacts we know that big companies don't like to play the open data game
The big monopolist Google is our friend. (My French is limited to 3 years in school, far too little for such a difficult language.)
For big companies free information is naturally a thread. They make their profit from the ignorance of their customers and hate competition.
I would pay for an app that detect the strawberry variety from a picture & uses weather & consumer feedback to predict whether they taste well.