Another aspect of Royalty Free Imagery

When we think of Royalty Free (RF) images I think the majority assumes that the entire photograph will be used, or at least a cropped down version to fit whatever printing specs are required. Maybe some photoshopping and other manipulation in other cases. Not much different than would occur with a Rights Managed (RM) image. However, I've heard stories of photographers being asked to shoot "components" which were then added into Royalty Free images. If you can imagine a scene of a couple at a beach having a great time with a cold drink. In an historical situation, the scene would be photographed more or less as is or at present, the same photographer would create the various components later composited into a single image. What if you were asked to photograph a series of arms, hands, feet, holding, wearing, interacting with various products and then those photos were used to composite into RF images that you could have easily shot?

Are assignment photographers heading toward being "component photographers"? "Hello, we'd like to have you photograph some products for us. We just need some component shots with specific lighting conditions because we already have the images we'd like to drop them into."

How does a photographer who is against the principle of RF reconcile shooting component images that will be digitally "implanted" into RF imagery? Does that photographer have any real control over how the images are finally used? Does the photographer shoot themselves in the foot by declining such jobs? Would they know this information from the start or is it information that comes out after the fact?
What will the future landscape of professional photography look like?