Nope, they weren't. We were paying an ongoing sub during that time, and being that SE is reliant on consistent income, it was in their best interest to not charge extra for every single patch because that would be crazy and they need to keep people subbing to keep the game profitable. Whether or not people keep playing TW3 consistently doesn't matter because once bought, they have their money, everything they make for the game for free after that is a raw cost with no return.
Also, yes. It's single player. However, the free DLC also took money to make and they did not charge anyways, when they could have. Besides the EU datacenters, we see SE expanding methods of getting money from us without expanding benefits we see in game proportionally. So server upkeep, unless the costs for the same hardware have increased dramatically, is not the issue. Many other single player games also charge higher for less, and use microtransactions for small DLC, it's accepted now in the gaming world. People spend their money more loosely than they used to.
CdProjektRed enhances our game experience without nickle and diming us along the way. They stand out as one of the few companies left who value their customers as considerably more than wallets full of cash to be taken.
Edit: The fact that other MMOs do more for customers with less money than SE has also says a lot. It's not just server upkeep, it's also a degree of customer contempt. TSW is more customer friendly than FFXIV and is on much more of a budget. Their servers are even of higher quality. Haven't ever played an MMO, even a F2P MMO, where there's been such a messy housing system. I don't recall seeing "data limitations" as an excuse for everything so much on other MMOs. RMT is worse in here than any MMO I've played. The NA/EU servers are always encountering issues that rarely afflict the JP servers.
All of these take costs to improve, SE has consistent income from subscriptions, extra retainers. SE has extra income from the cash shop and from the base cost of the game and expansion. Other MMOs I've played don't have all of these sources of income yet still manage to do a better job at things. Makes you wonder where the money is going.
We have too many problems in this game that even most F2P games don't have to such degrees for me to think all, or even perhaps most of the money SE gets out of us goes back into game development. And an expanding cash shop makes me think even more that SE has looser morals and isn't like CdProjektRed in that they don't feel they absolutely have to profit off everything just because they can.
Everything that goes into the game is an instance of already paying customers being appreciated and that subbing and playing is rewarded. Everything that goes into the cash shop is a instance displaying that we can be appreciated, for an extra fee. Oh yeah, and you still have to pay a sub too to even have the possibility to be appreciated.