He must have made some money from advert royalties and touring, so even if there's no sales profit in making another dusty, sample-based record, surely the bookings will follow... if not that, at least the interest of the 30something digguer demographic...
...and personally speaking, the only good thing from the Private Press was the Z-Trip remix. 6 Days was aiiight, but the rest left me cold. His mixes with Cut Chemist have kept it funky though.