What a fascinating problem, especially when it comes to personal photos that aren't really that 'personal.'

A thousand people will all visit Paris today, and all take a picture of the Eiffel Tower, and all upload said picture to their favourite cloud storage platform.

Is there any reason why we need a thousand, ever so slightly different, pictures of the Eiffel Tower from one day in April, stored in the cloud for eternity? Would people even notice if their images were quietly 'de-duplicated'?