as a matter of interest a writer/publisher, to whom i was close, of car workshop manuals, held a letter from austin morris allowing him to reproduce exactly any and all printed material that bore thier name and or trademarks and all was fine and dandy until someone at said companys succesors saw the value in what he was doing and called time, unless large sums equal to many many times the value of the projects was forthcoming.
so such agreements as intimated by one party can/do exist although the reward for thier use does not actually have to reflect any reward the user may have gained from using them and could be considerably greater