Just because its open world doesn't necessary mean it would take millions upon millions to complete. Going down that path of narrative, and most people should loose all interest in support the thing. It's all about how you spend your resources/money and the talent you get working for you, of which I got no real idea as their Candy Valley Network page just showcase the two founders and nothing else.
According to their twitter;
"The Wild Life kickstarter will fund the completion and further development of the fantasy world of Kerpal."
Does that mean if the KS fails, they won't be able to complete?
So I guess collecting over a million a year on Patreon isn't enough.... But hey, lets rage on FOW for their kickstarter for Subverse... those greedy bastards right? It feels like WL is doing a "George Costanza" double dipping with 10 fingers..