It's interesting how this mechanism, purportedly for grown-ass adults, is a loot box mechanic.

Pump more energy in! Because you haven't hit a coin yet. And it is getting forever more unlikely that you will… but at the same time, the payoff is even greater than it was last week! Maybe you won't even hit a coin. Your operation is not big enough. But if you do…! So, MOAR…

Loot box mechanic. Turns out it is not just for manipulating children.