ORIGINAL: BlueTemplar
While trying the game before buying it might be complicated for 4X games, it can still be done.
Also, Matrix/Slitherine games are now regularly discounted (something that was not even thinkable a few years ago).
I think the discounts are to pull in as much money as possible since they are trying to fund a few large projects one of which is distant worlds 2 if the hints dropped by a dev post are any indication. The good thing about pc games is that once the development cost has been recovered everything past that is pure profit as digital goods are infinitely reproducible at almost zero cost.