Why might people in the past have been hesitant to embrace the idea of progress? The main argument against it was that it implies a disrespect of previous generations.
Medium is trying to become the aggregator of articles. Why are they trying to do that? Because aggregators can become massive: tens of billions of dollars in value, sometimes hundreds of billions or even trillions. About 70% of the value created by tech comes from companies like aggregators, fueled by network effects.