Paradox has long maintained a DLC policy based around their permanent improvement and development of their games. I don't get what is greedy about genuinely expanding their games with content that wouldn't have been in the base game and charging money for it. Some of the DLC may indeed be on the more expensive side, but calling their entire policy greedy is simplistic and just trying to bunch them in with companies trying to rip you off. Sure, there's been cases where some of Paradox DLC has been egregious, but frankly, the standard case is that they clearly added onto the game that otherwise wouldn't have been there at all.

To propose one of the titles where this works best is Stellaris. I genuinely mean it, take a look at that games post release development and tell me that Paradox is being genuinely greedy. Just because something is long term profitable doesn't make them necessarily immoral.