Since 2008, we've offered a small feature to download printed books
from Wikipedia article. This is done in partnership with a company
They've sold about 15K books over that time period, not enough to
break even, and the support/maintenance burden for the service is no
longer worth it for them.
We'll disable this feature in coming weeks. We'd only continue to
offer it if there's 1) strong community interest in maintaining it,
and 2) a partner who steps up to provide the service.
We'll continue to provide PDF downloads (soon with a new rendering engine).
VP of Engineering and Product Development, Wikimedia Foundation