So, in 2006 design started. I assume multiple paid people were involved as from then. Development itself didn't start for another 3 years, in 2009. Then, after almost 8 years of work the game gets canned. Reason being its probably already out of date, people have been doing a shit job on it, which is why its taken so long, and it's probably going to take even more money to rescue the sorry mess.
Nowadays you make a base game over a couple of years and get it out there. After this you can still work on it, along with a steady sales path to support continued work, and flog it to death with endless DLC. If the game was any good, and the expansion content worth the price and substantial, then you would never have screwed up as bad as that lot did. Look at World of Warcraft as a classic example. 3-4 years of development to get it out there and then you're still churning in the money 8 expansions later after the main game has been out there for 15 years.