Lets see... World of Goo was made for approx. $10,000 and look at the sales! This is an extreme example, because you are talking about two (later three) guys who made the game while sitting in their basement. And the game is very good (for it's genre: casual, physics based) and got great word of mouth to spread [including slashdot beacuse of no DRM]. But the point is how do you manage to get costs in the range of $25 million anyway? If the excuse is because you have the overhead of a large corporate, then definitely also synergies to exploit because you can reuse stuff from others too.