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Making ethical (through anonymization) and effective use of open data requires time, processing costs and investments. In that regard, how can ensure the quality of open data when institutions as Météo France of IGN base their economic models on the exploration of ressources and publication of subscription based results/data? How to draw the border between open data and subscription based data?

http://www.data.gouv.fr/fr/faq/citizen/

https://www.gov.uk/government/publications/open-data-charter/g8-open-data-charter-and-technical-annex