I can't speak to your planetside part of the question, but here's how we handle these things at NWDA.
At the moment, there is no way for us to create any sort of "protected" macros. Single new shaders, that actually host the complex networks which you use to create those skies, clouds, rock surface, etc...., and which when opened, only present you with a custom user interface, letting you adjust selected parameters. Anyone who remembers the now depreciated planet surface shader will know what I mean. Eventually, also from a user experience perspective, that is what we *would* like to deliver, if we only could.
Now, we have started making available the unprotected, full networks of our presets, regardless. We are aware that there is a risk of someone just taking what we created in the first place, give it a different color and distribute or sell on their own. Of course we would go against that, but we actually grant trust first. We completely believe that our works are respected and valued by you all. We also fully believe that you can see the experience, labor, and love that went into making these presets and objects. We made prices very affordable, too, so that there is not even a psychological reason for theft.
We may be naive, but we are part of our community here. We are rooted here, and in other communities across the globe. So far we have not been disappointed.
Lastly: for any image produced by you, made with the help of any of our presets, you own the copyrights of the result of your work for any private use, if you have purchased the private use license. An if you would like to use your works in a commercial way, making money from it, we ask you to be fair and purchase a commerical license for the presets and objects - which is really not that much either.
I think that's fair, wouldn't you agree?
Best regards,
Frank