Sublime

In its early days, Substack primarily catered to a certain set of internet-savvy writers and journalists, lured by the promise of monetizing a direct relationship with their readers. But as it morphs from a niche publishing concern into a heavyweight start-up mentioned in the same breath as Twitter and Facebook, its user base is proliferating accor... See more

The developer day and how the store was introduced was in inflection moment of Altman pushing too far, too fast. My bet: He’ll have a new company up by Monday.