I'd imagine you're missing the manufacturer and the shipper, and possibly a few smaller moochers. As to precise numbers, I'd love to help you, since it's something I've been quite interested in myself, but the closest I've come to finding out was some pie chart on another site. I'll see if I can dig it up, but don't get your hopes up too much.
@chenguo4: Actually, I'm almost positive that it's the publisher who takes the largest chunk, with the developer getting only a small share or a flat fee. Although that relationship is between the two parties, and can be modified by them freely.







