Thinking a bit more about this, the better way to think about it is not "is it DOA?" what is it's "potential for success?"
I don't know much about the US market but in the UK it needs the combination of three things (none of which are actually related to the spec or the OS):
I know on sites like this we go on and on about sim unlocked phones and their prices but the reality is that the majority of smartphones are bought on contract via either the four large carriers (Orange, T-mobile, Vodafone, O2) or by intermediaries (Carphone warhouse, phones4u) who offer the contracts of the four large carriers.
So if it's offered on all carriers, then the potential is high, if it's offered only via sim unlocked and the web, the potential is low. Obviously with a range of options inbetween (some carriers, two carriers etc).
The second thing is the range and price of tariffs it is on. If it is only available on tariffs that are comparable with the iphone or similar devices, the potential is low. Similarly, the more carriers who take it, the more tariffs it is available on, so the higher the potential for sales. Consumers in the UK care far more about the upfront cost and the monthly payment rather than the TCO.
Tied to the first two, if it's on a range of carriers and a range of tariffs, then by association it will be promoted more in-store, via the carrier websites and their brochures. If it's not available via carriers or only promoted by HP, then it's potential is low. That's before we get into HP's own spend, obviously the more they throw at it, the better the potential for success.
So depending on the combination of those factors (and other variables such as what the competition is offering at the time), if HP get it on a range of carriers and a range of tariffs and has a range of promotion, then the potential is high, if they don't at the other extreme, then it's low. If this is only offered sim only or via HP's site, then within the UK, it will be very hard for this to be a mainstream success.
At the moment, we simply don't have enough information about any of those factors to make any sort of judgement.