Posting my comment under this entry because I also use photos (fully acknowledged) under the Creative Commons license agreements because I am physically unable to create my own original photos -- let alone anything as lovely as I find there. I realize my health issues are my personal problem, but perhaps I am not alone in dealing with such things. Just sayin'.
As a writer of my own 100% original content, I fully support your idea of encouraging this kind of creative work. I would never think of stealing someone else's writing. That kind of plagiarism ruins careers in the real world, but on the internet it happens all the time.
I understand the spirit behind your proposal, yet I see my use of photos from Creative Commons as furthering the intentions of the photographers themselves -- people who put there work there to be used so others can see and appreciate their art. By using their work and properly sourcing it, I see my efforts as extending their reach into the world -- both in Steemit and elsewhere. That's my 2c worth. (smile)