The Internet and property rights

John Willinsky, a professor of education at the University of British Columbia, argues that we should treat "intellectual property as public goods."

With the use of open source code, no less than with scholarly work, the property right at issue is almost entirely a matter of respecting the authorship of the original work. ... One of the intellectual properties of scholarly work is its reflection on how ideas take shape among groups of people over time. The scholarship’s value, in turn, is entirely determined by those who later come to utilize and then build upon a given property without remittance to the original author, beyond this acknowledgement. Such an approach to property, to return to an earlier point, is clearly not about ownership, in the common sense of a right to exclude."

The difference between Willinsky's persepctive and that of arguing for "everything is free" on the Internet is that of crediting one's sources.

Question: If there should be no intellectual property right/ownership, why should there be an attribution responsibility? How might the relational models be used here?