I can't argue that Apple has been right many times and yes, they have led many times with innovative world-changing ideas, but with some ideas/products they have also failed. Don't forget the Apple III, the Lisa (in landfills today), the Newton, or the original mobile.me (a cluster mess). Even though I admit they have had more wins than failures, they have had some monstrous failures so they are not infallible.
The Newton didn't fail per se -- Jobs killed it. Those that used it swore by it. Jobs allegedly killed it because the iPad was on the horizon, which ultimately became the iPhone first.