They keep saying how the game has 2.3 million accounts but how many of those are actively subscribed to this day? I get they want to play it as safe as they can and not invest too much on infrastructure and pretty much anything else so they spread everything as thin as they can to reduce costs and increase profits, it's understandable after 1.0 failed for being rushed into the market. You'd think though with this so called great success the game has had they'd have enough resources by now to do a bit more and go the extra mile, and indeed they might be currently allocating that money and resources towards the expansion. They always seem to bank big, almost as an excuse, on the next big thing on the roadmap. It's happened since 1.X, the ARR alpha and betas, PS4 version, the entire 2.x patch series, etc.

Still they have the real sub numbers they always refuse to concretely state, so most likely there could be a real decline in subscriptions for them to be avoiding spending more on server infrastructure, understandable for all MMOs of this type really.