re: The problem with space exploration that isn't nationalized?
Only a small fix is required. A contracted responsibility for all PI's to release data in a timely manour, and a dedicated outreach budget and set of standards.
Basically - if you want to put your camera on an ESA spacecraft, you must do outreach and data disemination.
Sadly, ESA is a bit too gutless to do this. It doesn't 'get' or 'do' outreach properly.