In theory, yes. But there are a plentiful of Flickr users who grudgingly renew their Flickr account because they don't see any alternatives that includes portin

In theory, yes. But there are a plentiful of Flickr users who grudgingly renew their Flickr account because they don't see any alternatives that includes porting their photos. The solutions exist. But no one knows about them. I believe this is a big problem and we're baking data portability right into the service. If Flickr had a big button that said, export all of your photos then I imagine people would. And by export I don't mean download zip file. I mean move where your photos are stored without losing the benefits of having them "up in the cloud".