I don't see why buying a new TV should be different than buying a new laptop. A 47" LG LCD TV is about the same price as a Macbook Air, and nobody complains that the MBA requires them to "replace their existing laptop."

Not that I think Apple is going out with TV's. The content situation is still iffy, and I'm not really sure if Apple can do anything about the pure shit interfaces DirectTV and the cable companies put on their services.