Can't you just put a game on stores when you are self-publishing?
Game Delistings
!gamedelistings@kbin.social recreated since that instance is down. Community made to inform and/or discuss about game delistings, be them previous, upcoming or potential ones. Not related to other projects with the same idea, besides the aforementioned Kbin Social magazine. No grey markets or piracy sources allowed.
From what I remember, in some cases of delistings on GOG due to rights changes, staffers there commented that, for a game to be relisted, it would need approval of the new rights holders. And since, going by Kagura Games' notice specifically, it was due to termination of contract, I would imagine the only thing Shady Corner Games could do now is the delisting, and now we wait to see what the dev will decide, if he/she will decide anything.
It should still be safe on DLsite and Patreon, as apparently it is self-published there and going by KG and ZP's messages, self-publishing shouldn't be a problem.
Something about this decision seems odd as you can self-publish games on Itch.io so this shouldn't have been a factor when they chose to delist their games
Might also just be a strictly business decision
Regarding Itchio specifically, it was available under the Shady Corner Games' page, the publisher. If the dev wants to make it available on Itchio again but now self-published, I would imagine it would require him/her to publish under his/her own page.
That seems to make the most sense.