First of all, I have no idea. My most popular Medium story in months was a story about net neutrality and the legacy of the free library. I was tempted to lock that story, but that would be a little hypocritical.
At the same time, I’d like to make money, too. Maybe Medium can simplify the equation and make all stories accessible (Jay Rosen found that’s what members generally want even for non-paying readers) while offering other perks for paying members. idk.