Originally Posted by charlesatan
The second print run might not have been as profitable for them, or the entire endeavor wasn't in their interest/financial goals. Latter was the case for Games Workshop's publishing and gaming imprint; company got scrapped despite their books selling out on the pre-order level.
It was WotC, but there was enough demand they could've sold twice the paper copies of that book that they did. They had to do bigger runs of all the later sourcebooks because of the high demand.