Come on, iPhone will go fine, nothing can stop it. Only Android has some chances, but nobody knows when they will appear. It's a future, man, and it will do without Flash support.
The iPhone can be wildly successful and still be less than 1% of the browser market - a market that includes every desktop and laptop computer as well as every other smart phone.
Well, nothing has to stop it. It has serious inherent limitations. Tiny screen, being tethered to one carrier, etc. It could become the most wildly successful phone on the market and still be only 10% of phone-based browsing, and phone-based browsing, having those limitations, could only be 10% of all browsing.