When I write on Facebook and Twitter I get RT's and Likes which I can convert into social capital. When I share a video on YouTube I get paid a percentage of the advertising revenue. But when I write on Medium I get, well, nothing.
At least by writing here I am getting brand exposure for my company by diverting traffic back to my brand.
Unfortunately Medium has also also adopted the reputation of being a platform for tech douchebags sharing their overbearing, first-world startup problems.
Yes it's an extremely easy in-browser publishing tool but is it worth it? Just a thought.