General public is not anywhere nearly as interested as academia people. The ones who are in the greatest need of access to science journals are researchers, and since most of them work for public research institutions, they already have it. Undergraduate students don't really care about papers, because they're too advanced for most of them to grasp. That's why they use textbooks. People who are not connected with academia, but still want to have an access to academic papers, are a really, really small group, so it's no strange that nobody cares about them.