This is a good observation. In my mind Flickr for instance isn’t about sharing per se, but I see it as an off-site archive next to my photo archive on my laptop and a NAS at home. That it allows for easy re-use of those images in my own site is an added bonus. Will need to write a bit about my own thoughts from this session too.
A photo (or video for that matter) is a special kind of data. Its file size creates limitations to its distribution, but no matter where it’s uploaded, it is always owned by its creator first. Status updates on any platform are owned by the company first and can only be copied to the creator. That is why I think it’s important to use IndieWeb: if you publish updates on your own site and then POSSE them to the big silos (where your friends still hang out), you own your updates first, just like you own your photos.