Extended license question for digital asset resale

I'm a compositor and have a demand by many clients for themed backgrounds that they (other artists) can then use in their own creations.  I usually put together three or more separate assets purchased from Adobe Stock, into one composited background for my own work.  I am assuming that even with an extended license purchase I would not be able to sell that new composited background to other artists - as it is a digital file comprised of iterations of the three original assets I purchased?

To give an example: I purchase an extended license of a stock image of a grassy hill, mountain range and sky stock.  I put them together, color grade them and add some lighting effects, fire, sparks, etc.  I then would like to sell that one flattened background to another artist so they can use the background in their work.

Thank you in advance for any information or clarification!