Evo and competitor phones are coming fast now because consumers have been sitting on the sidelines with the junk phones they've put out over the last couple of years. Not all were truly junk, but clearly they didn't have the hardware or OS to make them lustworthy. And don't forget if Sprint continues with it's value-pricing plans, these competitor phones are going to get much more expensive on networks committed to "additional tiered pricing" taking advantage of the fact that data consumption is only going to get more lucrative for other carriers despite the cost of delivering going down (additional infrastructure costs will be high but aren't being assessed as one-time fees but instead rolled into ongoing plan charges).
I want Moto to succeed b/c they're employ a lot of people in America, but I want other makers to succeed too so no one gets in the way of good products coming to market. Moto's problem though is the only thing they've made worthwhile since the Razr has been the Droid. Droid's good, but it's now not a premium phone and never had the specs to stay as a premium phone. That's where Evo's likely to be different. It will rely on network expansion/speed to maintain it's advantage while the hardware/OS gap will be inevitably closed with each new advance in technology.
I liken Evo's ability to hold on as a preferred, premium phone to the way WinXP did for PC OS. New products came out, but people have stuck with XP because it's still reasonably reliable, not severely speed or feature handicapped compared to new Windows OS releases, and allows its users to do 99% of what they want to as quickly and effectively as they want to. Why buy a "new" phone until something again really changes the game is what Evo owners will be asking, and the answer will likely be "no reason until something BIG comes along."
Ask this, "If I have an Evo on a value-priced plan with good service and 4G truly unlimited, how good would another phone have to be to sign up for another carrier that's only going to charge me more to take advantage of that phone's capabilities?" This is how Sprint should market and sell Evo after it's been on the market and other "Evo killers/competitors" begin to emerge. I hope someone from Sprint marketing's already working on this.