Sure, there are other ways. Arxiv is certainly an option. However, someone still needs to develop and organize this (and pay for that). There is no free lunch - either you are paying a publisher for this service, or a university library to do the same.
(Of course, one might argue that other entities might be able to do the same thing cheaper - but this was not the topic of my argument)
(Actually, there already is some sort of "inter-university p2p network": http://www.lockss.org/ )
(Of course, one might argue that other entities might be able to do the same thing cheaper - but this was not the topic of my argument)
(Actually, there already is some sort of "inter-university p2p network": http://www.lockss.org/ )