A sad, but true tale about what could have been at Flickr.
Because Flickr wasn’t as profitable as some of the other bigger properties, like Yahoo Mail or Yahoo Sports, it wasn’t given the resources that were dedicated to other products. That meant it had to spend its resources on integration, rather than innovation. Which made it harder to attract new users, which meant it couldn’t make as much money, which meant (full circle) it didn’t get more resources. And so it goes.