Some questions/observations: - who would pay for the service? is it the company or the individual employees? what would be their incentive to pay? - are you envisioning that the customers would get discounts from food stalls if they don't require the disposable containers? (they should - where i live in ethiopia customers get charged extra for takeaway) - i think the idea might also work as a product as well as a service: since many companies already have cleaning staff, they might not be willing to pay for a cleaning service, but still be willing to pay for versatile, reuseable containers that help them reduce waste.