Not sure what you mean. The distribution problem is solved by the internet. Discoverability (probably what you meant) is solved redundantly by Medium, since it is already solved by Google, and by social news websites such as HN and Reddit, etc.
Medium = YouTube for textual content. The only way we "need" it is if we want a feed of algorithmically chosen content based on previous/popular preferences, but that obviously comes with a bunch of problems of its own.