When this phone flops Verizon will be giving them away free early next year. I'm no Apple fanatic and I have had my share of smart phones but the iPhone despite it's down sides still is hands down the best phone I have owned. Those are going to be pretty big shoes to fill for the other cellular companies. The iPhone has stepped up the game as far as cell phones go weather you agree or not. If they brand something "iPhone killer" or claim that they have better product they better deliver or else.
Best phone or not, they don't have to kill the iphone nor convince everyone that this is the best phone on the market.. They just have to convince their customers that what they offer is good enough for them to stick around, and this phone may be "good enough". It's not about getting new customers, it's about keeping the ones you have. Business 101 will tell you it cost more to get new clients than to keep the old ones.