I think a lot of it has to do with the sheer friction of paying. In a corporate context it's going to be a days long battle, at best to get a new piece of software approved- just from an expense pov- we aren't even talking the IT and infosec teams. If it's technical content on a website, sure maybe I can pay out of pocket, but it's actually a lot less friction to just move onto the next site than to open up my wallet, get charged and maybe get what I am looking for that justifies the price.