Other phones sell amazingly well without iPhone-sized hype.
As I've commented before, the first iPhone was the most hyped device in years. Yet in the period that it sold its first 5 million, HTC quietly sold 3 million of their first Touch model.
In the latter part of 2008, Apple sold 4.4 million iPhones (although if they counted as they usually do, 1+ million of those are "in the inventory pipeline", not actually sold to end users). At the same time, HTC sold 1 million G1's, 2 million Touch Diamonds, and unknown million(s) of their Touch Pro.
Competitors don't need a "killer". They're doing just fine as is, getting free smartphone PR fallout from the iPhone, and selling on carriers that Apple has ignored.
I agree with everything you write. There really doesn't have to an iPhone killer - other cellphons are selling just fine. I'm sure HTC and Nokia sell more combined phones than Apple. However, for a single phone to outsell or sell similar numbers to the iPhone and sustain these sales, it will need the hype. This is reason the iPhone sells so well - its hype. I'm sure there are millions of iPhone users who bought there phones before even trying it out - just because there is an Apple logo on it.