I played EVE for a while; actually as part of one of these giant corporations. I'm not sure how fun it'd be without being in one, as they tend to insure you against battle loss and it takes long enough to grind the space-mining-simulator even with their support.

The other thing I remember is that these "Battles" were extremely frustrating, and very long lag-minigames. e.g. get instruction over teamspeak, everyone targets a ship and if you are lucky within the next three minutes your UI will respond and fire a shot before you randomly got targeted and exploded instantly (this was server lag, as the client would run reasonably smoothly). Even giving CCP advanced warning about where we expected to have a battle they said there was "nothing that could be done" and basically refused to acknowledge that there was a problem.

That, plus the fact that living in the UK generally meant operations were extremely late nights, meant I dropped it.