The Nexus One was destined for failure in the US
The Nexus One would never have sold in the US.
For the phone to sell well, it should
1. The sorry Math skills of most Americans means that they will look at the $300 extra they would have to pay up front and forget about any savings in a no-contract plan.
2. The savings in a no-contract plan AFAIK is only available through T-Mobile and it's not much of a savings.
3. The flexibility of changing carriers doesn't work in the US with a different Nexus One for different carriers. Even between the 2 GSM carriers, the 3G bands are different.
Add to that,
4. The inability to touch and play with the phone before making an expensive purchase with a hefty ETF makes it a boneheaded move from Google.
5. The early #G connectivity problems did Google and T-Mobile no favors.
6. Google's naive assumption that they could do support on the cheap for an expensive device that people have paid for. And to top it all, do a piss poor job of it.
There is only one reason remaining to buy a N1 - Future OS releases will be fastest on the N1 and are not tied to either manufacturer UIs (Sense/Motoblur etc.) or carriers.
It's a great phone, but the newer HTC devices even more so. How many people are going to choose a Nexus One over the Incredible or the EVO now? Maybe a N2 with a keyboard with beefier specs.