Idk, I've never had that happen, while some people have had it happen over and over. From my perspective, it doesn't seem any more inevitable than the console becoming obsolete.
Really? I've had that happen on five different units I (or my brothers) have owned. Given, after our first "new" one rrod'd, we started buying refurbs. From what I've seen, though, it really is inevitable, and I've just started expecting them to die at some random point. My current one has lasted two years, though.