What is The Cost of an Early Release?

Everguide writes "Sony Online Entertainment recently announced that they would be releasing EverQuest 2 on November 8th, ahead of their main competition World of Warcraft (last predicted release date: Week of November 22). SOE is notorious for launching games with content that is not finished or buggy, and Blizzard is known for at times delaying a game just to work out minor bugs. Is it worth launching a game early, yet buggy, to grab market share from the competition? I know the Themis group thinks a poor launch can cost a company millions of dollars but will the benefit of launching early exceed the costs?"