Good Lord, did they just keep hiring thinking that if they get enough people then a game was going to get made?
I seem to remember reading (probably the Gamasutra articles) that the monthly cost per person for the industry was about £10,000 (overheads aswell as salaries) meaning that their monthly burn rate would be in the region of $4,500,000. They must need get rid of staff desperately by now. I'm guessing that they need to get 3.0 to live before they announce layoffs in the hope that everyone will be too distracted by the 3.0 release (? & holiday live stream) to notice - just a theory.
What's your source for that number anyway?
CIG did an interview a few weeks back. The figure of 457 employees came up.
Now...as for monthly cost, the typical rule of thumb is about $13.5k per employee per month. That isn't entirely accurate but it should...and does....give a ROUGH ballpark figure of the total cost of a project.
As in...50 employees for 12 months should require a rough budget of $685 k
Now...as for CIG.
Not all of that 457 figure will be devs. Or even artists. It would include support staff...mods, PR and marketing for example. We can also posit that $10k per man month...accounting for tax breaks and swapping prestige for decent pay and conditions is indeed reasonable, giving CIG the benefit of the doubt.
That $4.5 million however probably represents a fair estimate of the upper range of their average monthly costs but it is likely too high for most months. I'd put the lower bounds at about $2.5 million, with $3 million a month being a plausible rough guide but depending on a number of factors we don't know, the real figures may be higher or lower.