Well, I've done it. But I see no need to leave Medium -- where I have WAY more followers and subscribers. I pretty much tweak and repurpose my Medium posts for my Stack and publish them at a later date. All I really care about is making more connections with readers, and I haven't put my Stack behind a paywall (although people are certainly welcome to give me money if they wish). I know there are many who claim to be making the big bucks there -- I'm not, but then I've never made Lotto money on Medium either. Both platforms have their advantages and built-in challenges — and I'm operating in the blind faith that Medium will continue to try to get around the bots and spammers and find better ways to reward good writers.