Sony's fiscal 2008 annual report delineated potential risk factors to its investors, outlining that "the large-scale investment required during the development and introductory period of a new gaming platform may not be fully recovered." The loss figures were provided as an example of the "significant negative impact" introducing a new platform can cause at first.

"In the past, large-scale investment relating to capital expenditures and research and development for the manufacture of key components, including semiconductors supplied for [PlayStation 3] was also recorded within the Electronics segment," the company said.

In order to stay competitive, said Sony, it had to invest large amounts of money in research and development to introduce the PlayStation 3 into the market, and these sorts of expenditures don't always get recouped, especially if a platform "fail[s] to achieve such favorable market penetration... resulting in a significant negative impact on Sony's profitability."

Even if it can recoup its investment, Sony said, it's still possible to have lost large amounts of money on the platform's introductory period, and even a successful PS3 might take a while to replace what it cost to produce. These possible outcomes are currently a risk for the company, S