Zenefits’s new chief executive, David Sacks, last week banned alcohol in the office of the health-insurance brokerage startup
The model is simple - you serve the needs of your core customers for free or almost for free. The core customer's activity creates a side-effect that can be harnessed to create value for another set of customers that are willing to pay.
Why the sudden popularity? It's not just the number of jobs the economy has been adding over the past few months. It's a triangulation of three trends that are particularly impacting this type of application.