Sony can't rely on exchange rate, it's dangerous. What they can do is what they are currently doing, although reluctantly, outsourcing some components, like they did with some LCD displays, and offshoring more plants, as foreign demand is stronger than the internal one, and exporting from Japan is still viable only for some high-end products, and only if all the main competitors are Japanes too, middle and value range can't be both competitive and profitable when the yen is too high.