Argument: Many major biotech products have come from patented genes
Some of the earliest and biggest products in biotechnology were proteins derived directly from patented gene sequences, and these had been very valuable. For instance, Epogen, made by Amgen, was derived from a single gene sequence. 
Julian Borger. "Rush to patent genes stalls cures for disease." Guardian.co.uk. December 15, 2009: "Products such as the cervical cancer vaccine, Gardasil, would never have been made available to the public were not its key components - including genes from the human papillomavirus - protected by patent law, said Obranovich."