I think right now it is a non-issue. If you were interested in CKII, you've already purchased the game and all the mods you wanted, so you won't be subscribing. If they plan on expanding it to other titles, such as Imperator: Rome, they risk people like me subscribing, realizing the game was bad, and canceling the subscription, losing a small fraction of what the player would have spent on buying the game outright. Apparently, the subscription is $5/month so right now it isn't worth me paying for CKII. However, if they were to offer a subscription to CKIII for $5 (or even $10/month), I would probably do it, just to see if I wanted to buy the game.