[Ukv]

Providing another meal uses up human labour, ingredients, and seating. One-off costs, like designing the menu, typically make up a smaller portion of the business's costs.

Providing another subscription for an app is often just a flip of a bit. One-off costs, like developing the app, typically make up a larger portion of the business's costs.

It's therefore generally (though not always) more feasible to provide a free trial of digital services/apps than of physical goods.