it does show up. Just like star wars, the toys and figurines and sometimes it even spread into the VAs, authors and other artists adjacent to the projects.
In fact, you might even consider paying less for crunchyroll subscription, and buy more of the merch of your favourite franchises.
In fact, the traditional model of television is that you give the show away for free and hope to make money on popularity.
If you produce music, there are multiple companies right now who sell the service of "we will upload your music to every streaming platform, so that anyone who wants to listen to it for free can do that".