Just a customer acquisition strategy. Offer more sats to get users and then lower the amounts. Get used to less "free sats", as price rises rewards issued will drop. Hard to do for a startup project but it would have been smart to load up under 20k and lock in your projected next four years of reward issuance so then you don't need to modify reward issuance much. Worse that happens in that case is no one plays your game and you end up with a few bitcoin.

But again hard for a new project or even a growing project to outlay that amount of capital up front for rewards.