To work with an international audience, you must have great resources, because you must be able to provide different advertising platforms, based on the wishes of the advertiser. Or you should collaborate with companies that own advertising spaces. What is their profit to give a place for advertising your company, and not to work with customers directly. What benefits do you give them?
You are right, resources are needed for a wide grip. Those display providers who will work with us will be able to generate passive income using our application.