I think ConceredApe could follow the Deep Rock Galactic Model.
All content/story additiona are free updates. But to keep the lights on, every few months a cosmetic DLC drops that had no affect on the game what so ever, just lets player put money in the tip jar and get some cool threads and a hat for their troubles.
Alternatively tgey could use the Rimworld model: release DLCs that heavily change how you play the game, allowing you to tailor the game to your wants and needs that way.
I mean, he's in a similar situation as Toby fox. He has the freedom to spend as much time as he wants on developing updates without worrying about money, so he doesn't need to charge anything or ask money from players.
I'll just buy the game again on a different steam account when I like the content added in yet another major update.
Eric "ConcernedApe" Barone is a shining star of how honesty and genuine care for the community can make you MUCH more successful than just trying to milk your content for every penny it's worth.
Cultivate a following and it will grow. Exploit it and it will shrink. Crazy how nearly everyone in the industry has forgotten this