The article links to a previous article about the online service for the free to play version shutting down. It looks like the Complete edition is an offline version where all the content will be available through gameplay without microtransactions, where the events will rotate every 4 years. HTH
It's reportedly been running for seven years, so I suppose I just assumed that they didn't want to pay to maintain the online service for all eternity.
The other reply's probably also got a good point in terms of actual staff doing support for it, too.