To be honest 0.0002% is about where it’s at currently so wish granted.
Source: I’ve spent over 150k on the wheel and eventually won everything. (My fridge has a lot of potatoes in it.)
What they could do is introduce a pity system where after every 20 shit consecutive rolls (10,000U, the game rewards you with at least catsacks, or better items with an increased probability. That way your luck wont be terrible forever, and players with bad luck will have a goal to spin towards. Everyone wins, developers increase the likelihood of players increasing their unit investment, and players have a guaranteed chance at receiving something nice.
EDIT: I suggested in another thread that the developers should change the prizes during events. (Change the Spin to Win prizes during seasonal events) This is relevant because a change of prizes periodically would at least guarantee spinners a chance to get a brand new item.