Palm's vs Pocket PC's. Nokia vs the world. Sega vs Nintendo.
Not many wars where decided by technology itself but other things.
Nokia trusted his middle-end low-end market share then android and iPhone came out.
Palm lost it's way when the smartphones came out.
Sega lost because bad decisions. Nintendo also had bad decision but now is staying behind because the ferocity of the fight between Microsoft and Sony.
Kodak had amazing products but it's perfectionist way to do things let them lagging behind.
Kodak and Nokia are really sad stories because both had amazing products but didn't understood the changes around them. (yeah both more recent examples)
Microsoft won their previous wars because understood the previous reality "feature complete but mediocre solutions". I mean, what the people need want but no more just the essential part. So they dethrone Lotus, Wordperfect etc.