Maintenance for the week of May 25:
• PC/Mac: No maintenance – May 25
• ESO Store and Account System for maintenance – May 27, 6:00AM EDT (10:00 UTC) - 4:00PM EDT (20:00 UTC)
Besids there is certain MMO that have ability to instal local server as your own personal "shard" like Dawn of Light server emulator for The Dark Age of Camelot http://www.dolserver.net
The most we can hope for is when ZOS decides to shut the servers down, their last act will be to release an Update that allows us to play the game offline like a Singleplayer game. However I have no idea how that would work and I don't know about any other MMO that's done that before.