I've never understood Medium. I've always just thought it was Blogger with a locked (although very nice!) theme. Honest question: What do Medium users regard a

I've never understood Medium. I've always just thought it was Blogger with a locked (although very nice!) theme. Honest question: What do Medium users regard as the killer features of the platform? Can these be achieved with your own site? My guess is that the most prominent reason is that every Medium user is on a centralized platform and therefore more discoverable. This is bound to asymptotically trend to almost zero as more people use the platform. Am I missing something?