Development cost this gen and how it could affect gaming.

[SvennoJ]

That 7% marketing slice seems a bit low compared to the top examples.
COD4: 40-50mil production, 200mil marketing
Skyrim: 700 people of which 100 in marketing and 270 voice actors.

But as the hardware gets more powerful, the tools get more standardized and easier to use. More and more work will be automated and results can instantly be checked. There's no reason teams need to keep growing at the pace they have this gen.