Hardware is getting cheaper, but the processing requirements of modern software is always
increasing. Second, hardware costs is only part of the ongoing expense; people also tend to
cost more over time.
Wikipedia is a poor example, because there is actually a legal organization set up to deal
with the administrative crap and ensuring the servers and bandwidth are paid for. Sure, they
rely on a lot of volunteers for the actual encyclopaedia itself, but there is a very real (and
dysfunctional) paid cabal behind the scenes.