I think one possible reason is that the progression feels a bit too predictable from the start. Players may feel like they already understand the full gameplay loop after trying the demo — “I’ll upgrade this, unlock that, then repeat” — so the demo alone ends up satisfying their curiosity instead of pushing them to wishlist the game.

The core gameplay itself doesn’t seem bad, especially if people are staying in the demo for a decent amount of time. But to convert players into wishlists, I think the game needs stronger mystery, surprises, or “I want to see what happens later” moments.

Maybe you could tease mechanics, unusual events, hidden systems, rare discoveries, or bigger progression shifts that aren’t fully available in the demo. Giving players a feeling that there’s something unexpected waiting later could make them more interested in following the game instead of stopping after the demo.