The low margins of the business model indicate that services that rely on infrequent tasks (grocery shopping, home cleaning, etc.) are poised to suffer, as they simply do not generate frequent enough revenue to survive. Uber, rather uniquely, has the sweet spot, since so many people need to travel at any point in time. The evidence also suggests that high-skill personal jobs are unlikely to be successful on a lean platform, as they require training (and therefore employees) and they are subject to workers setting out on their own (rather than remaining in an exploitative relationship with a platform). Independent house cleaners, for instance, can often make more than the platforms can profitably offer, and this was ultimately one of the reasons why Homejoy collapsed.

Nick Srnicek, Platform Capitalism, loc. 94