Plastics manufacturers oppose plastic-free distribution of music?

There has to be some hidden agenda in what is coming out of the "manufacturing" sector given there is these wacky calls for ratification of copyright treaties which, if anything, will increase costs and risks for the manufacturing sector.

The following is from Canadian Plastics:

Recommendations from the report that address plastics industry concerns include:
...
5) That the government of Canada immediately bring forth legislation to amend the Copyright Act; ratify the World Intellectual Property Organization (WIPO) Copyright Treaty and the WIPO Performances and Phonograms Treaty;

Maybe they are worried that as the industry moves move from CDs to digital distribution that less plastic will be used, and they are really fighting against technology that enables plastic-free distribution?