I think they both lose between $20-$40 per unit to manufacture and deliver to retail. If they sell them direct, they only lose $5-$15 per unit.
Because M$ is going to sell a crapload of battery chargers and headset adaptors, they will really be breaking even from the word go.
Also, based on the sheer number of people who frequent this site and claim that they either don't play online or don't have internet that allows them to, Sony will not have a high attach rate on PS+. Thus hurting Sony's ability to make any money off of the PS4.
On that same idea, because M$ is pushing the internet connection aspect, their attach rate to Live Gold will be astronomical! They will be rolling in the dough from day one!!
Just my guess based on the feedback given by the posters on this site.







