I feel like the cafeteria is the best scenario, because there isn’t an imbalance of needs like this. Pay a flat fee per year and get a lunch every day, or every work day, or whatever. Economy of scale would mean that it would save the subscribers money.
…huh, this could actually work. The one downside is that people nowadays expect variety in their food and cafeteria food tends to be samey. But if you could solve that, this is a good idea.