IIRC it was Anssi Vanjoki who answered the question about the commercial success of the 770/N800 (right after the N810 had been introduced) with "Selling units wasn't the point."
I also recall having read (though I cannot find the link anymore, it was part of a research I did 1 year ago) that in the original business case for the 770, they expected to sell less than 3000 units. Worldwide.
So what would be the point in publishing such numbers if you don't want to sell huge volumes in the first place? You just cannot gain anything from it... Except telling HTCs and Samsungs of this world how well the market responds to some of your experimental products.