I doubt that 100% touchscreen phones would have been so popular so quickly. Most phones would still have physical keyboards - Apple was the first to have the guts to go 100% touchscreen. I remember all the articles for the next year how business people would 'never' use a phone without a physical keyboard. Look where we are now.
Without Apple, it's hard to say any executives would have the balls to put their jobs on the lines to come out with a 100% touchscreen phone.
Really? LG Prada, Palm Pilot, Motorola MING, and that's not even touching on the huge number of Windows Mobile devices.
Again, I don't doubt that Apple sped up the process, but even without the iPhone I'd think capacitive touchscreen smartphones would be widely available today.
2006-2007 was about when manufacturers started realizing the potential of media-centric smartphones, and how touchscreens (which had only been previously used on devices aimed at business users) would allow larger displays without compromising on device size. To say that we'd still all be using flip phones or bulky smartphones with lots of physical keys 7 years later is silly. Technological advancement wouldn't stop just because Apple didn't launch the iPhone.