Considering that, unlike other folderss, a folded Brompton can be rolled without any problem, that BF prototype has no competitive advantage. Besides, the titanium version of the Brompton is even lighter.
How many commuters will actually bother taking a backpack and carry the bike on their back? In that respect, the Dahon/Tern bag is a more compact solution for those who do need to bag their bike.
90 seconds to fold/unfold is way too long for a commuting bike.
They also forgot to weld a lug on the headset to carry a bag in the front.
And considering how much BF bikes cost, it's unlikely to be cheaper than the Brompton.