Open access is
not fairly standard. In my area (chemistry) there is no requirement and people stick to the paid journals. Why? Because of the prestige, which was my point all along.
Despite all the complaints of being "predatory", people still submit to those journals and volunteer their time. Why? Stockholm Syndrome? No. "Inertia"? No.
It's because they get something they can't get out of open source journals - a publication in a highly prestigious journal.
My point is everyone likes to say Elsevier offers "nothing" yet, what you call "inertia" (I call it "wanting what Elsevier has to offer") keeps them coming back to you point - maybe for decades?