Never, unfortunately. The renders of this game are made from Honey Select 2, and the devs of that game don't like it if you use their software to make your own work and sell it on Steam because copyright infringement. Daz3D devs they are not.
Technically they can go after Itch.io, Patreon, and Subscribestar as well for hosting devs like Caribdis, but from what I can recall Itch doesn't really sell the game, and you can make the argument that you are not "buying" the game from Patreon or Subscribestar and just paying the dev to make the game since they also release it for free after a certain amount of time has passed. I dunno, that's how I see it with regards to the Itch.io and Patreon/Subscribestar stuff.