As a professional photographer who has spent some time fighting this and joining many discussions on the issue, this is a losing battle. The only way to stop this mindless usage of intellectual property is very restrictive DRM and services/apps that respect it. And no one wants that.
I think copyright as we know it is dead. As taking images off the web becomes even easier and easier, very few are going to take the time to consider usage rights. The best way forward for content creators is to embrace this instead of fighting it and instead figure out ways to ride the wave.
And some of the most successful creators I know have done just that and have beat the rush by giving their stuff away and instead working on building loyalty with customers do do pay. I do it myself. All my photos are licensed under creative commons. They are still registered with the US copyright office and I have gone after people who have used them commercially without permission (and I've won) but for all other cases, I give it all away.
I thank you for posts like this, because it is always useful to educate people on the matter, but I honestly don't think we can put this cat back in the bag.
I know what you mean.. i'm a professional photographer too and i work for many microstock agencies.. The situation There is even worse.
I think is always useful to talk about copyright, many people don't have any idea what It means..