If the server is unlocked and/or accepting paid transfers, how is it the player's fault?
In a pay to play game (with a cash shop on top), SE should feel that investing in modern server technology is well worth the expenditure. They have had a few years to plan for an overhaul. Tacking another datacenter on and calling it a day is a bit silly. There is a reason people congregate to a bigger server, people to play with. MMOs are more fun on populated servers.
