I'm guessing its more for reproduction for publicity purposes than Moog wanting to make money out of any circuitbenders ideas. Something tells me that a company who built the Moog Voyager etc and actually know a thing or two about electronics, are not only capable of doing anything any circuitbender can do, and doing it better, but also have far better things to do with their time than mess around with modding toys.
In fact i can't believe that i just wrote that sentence!
Anyway, putting aside the argument about whether its actually possible to hold any copyright over a mod you've done on a toy for a moment, i can't say I'd really give a shit if Moog held any rights over a mods I'd done on a £5 toy. What would be the problem?
Just my opinion.