Message from the ACM President Regarding Open Access
acm.org
acm.org
Science is a community. Publications are the means of communication in that community. Up-to-the-minute access is necessary in order to do relevant research.
As a retired researcher I struggle with spending $40 for a 4 page paper written by someone who was in my research group years ago. Given that I read a dozen or more papers a month I too struggle with "a sustainable model".
You want to be "in the middle" of the community communications and you want to make money doing it. I want to keep up with the community and do research. You are actively blocking that effort.