I thought this was going to be a thread debating the merits of the two disc formats, and I'm disappointed that it's not. :(
I know that particular format war didn't last very long, but I wonder if there's anything HD-DVD ended up doing better than Blu-Ray.
As for the actual topic of this thread, I'm not sure if it's the right analogy. Blu-ray and HD-DVD were incompatible with one another, while Kbin and Lemmy are mostly compatible. I'm not entirely sure what to compare it to, maybe Linux vs. BSD?