You're forgetting Cell's scalability. Sony would be daft to put a 1:8 BE into a TV, but they can use a 1:1 Cell chip, and print them off at 3x the density of the BE at 1/3rd the price. They can use the same software across all Cell platforms to perform the same task. eg. A scaling routine running on a TV can be used in a handheld with Cell. An image filtering process can be used on a TV, Cell editing suite (or video camera), and PS3's EyeToy. Cell based drawing functions (OpenGL presumably) can be used on Cell TVs, media players, and mobile phones providing a uniform interface, regardless of whether the hardware has 1, 2, 4 or 8 SPE's. In future Sony can improve manufacturing of Cell, lowering the price and providing much greater profitability than buying in components, and use the same software development strategies. In 10 or 20 years the code and systems used now on Cell will still be in operation, only the processors will just have more SPE's and run faster. Without needing to worry about developing new chips (just add some more SPE's) Sony can focus on the software that's driving these TV sets, mobile devices, media devices, holographics projectors and so forth.
The key point is scalability. Whereas in the past new tech has required new processors, Sony are betting on Cell being a universal solution, and in the long term they'll be able to make these cheaper then any other new scalable solution and have the headway in the software department too. That's where they hope to make back on these huge investments of their's.
The key point is scalability. Whereas in the past new tech has required new processors, Sony are betting on Cell being a universal solution, and in the long term they'll be able to make these cheaper then any other new scalable solution and have the headway in the software department too. That's where they hope to make back on these huge investments of their's.