Subscription commerce has captured retailers' attention with its built-in customer base and predictable sales patterns. It may seem like there is a box for everything—think special effects makeup or instant ramen—but not all categories have been embraced equally.

Ad blocking user growth is slowing in the UK, with rates much lower than in France and Germany. But it’s still costing publishers revenues. Better advertising and messaging are on the horizon, which might help slow rates still further.