The reality very probably likely is they're already slated for additions. But, they're already midway through adding an entire new regional data center for Oceania, so likely nobody's getting anything until that's up and running.

EU's already gotten four new servers in so many years, and even split their data center into two (meaning doubling login queue capacity). Growth in the sector is simply outpacing predictions based on historical data, and certainly outpacing their capacity to react and implement upgrades.

In short, it is only very, very recently that EU has demonstrated the need for increased capacity, and they simply haven't had the time necessary to do anything about it yet. At best, they've maybe gotten budget approval or something. But, it's a long process to go from "we need new servers" to "new servers online."