That's the key, and it's why Dobwal's continued insistence on the failure of the Sony & MS business model isn't correct.
MS and Sony aren't selling hardware at a loss intending to recover the losses and profit based on software sales.
MS is adding digital distribution to the mix and Sony added physical distribution. The Wii doesn't have the hardware capability to do either of those things.
In fact, I'd go so far as to say that Nintendo is the one who either needs to reevaluate their business model for the next generation, or gamble on their current model being sustainable and repeatable why Sony and MS benefit from additional established revenue sources.
Additionally, at some point, Nintendo's current business plan (cheap, immediately profitable low-powered hardware), will start to eat it's own and compete more heavily with their own handheld market than with the console market.
Digital distribution is in its infancy, its not going to come anywhere near game software in terms of profits in the near future. Furthermore, regardless of many revenue sources you have they will never come close to the amount of revenue generated by gaming software.
And these additional revenue generators don't need consoles that sell for huge losses to be possible. HDD inclusions aren't the primary cost drivers for MS or Sony. A Wii 2 having a HDD or an HDD add on isn't going to force Nintendo to release a console anywhere near the real cost of the 360 and PS3 at launch.
The problem I have with MS and Sony comes not how they generate revenue but how and how much they use the profits from that revenue to subidize the retail price of their consoles.
Nintendo allows for a viable console whether it is first or third in the market. The typical userbase for a non market leading but serious contending console usually ranges from ~20-40 million console. A userbase at the lower end of that range isn't sustainable for the PS3 or 360 and maybe the 360 would get a little beyond the break even mark at the higher end. MS and Sony's business models lack the flexibility to deal to less than ideal market share.
Sony's is on the extreme end of subsidization on the PS3 hardware cost, which is a magnitude beyond what happen with the PS2. The Sony's game division return to profitability a lot faster, with less loss and with more userbase after the PS2 launch in comparsion of the PS3 launch.
PS2-------Profits (loss)
FY 99-----77 bln yen
FY 00-----(51) bln yen
FY 01-----82 bln yen
Total # PS2 shipped over that time period: ~29 mil
PS3-------Profits (loss)
FY 06-----(232.3) bln yen
FY 07-----(124.5) bln yen
FY 08-----? bln yen
Total # of PS3 estimated to be shipped over that time period: ~23 mil
Those additional revenue streams aren't going to make up the discrepany in the amount of losses the PS3 has created versus the PS2. We are talking 3.5 billion in losses versus 250 million in profits over the first two fiscal years of launch.
The PS2 was probably the least subidized console from MS or Sony over the last two generation.