Netflix revolutionize the business model of entertainment by firstly offering postal service and later follow with streaming worldwide.
Famous turbine manufacturers now allow airlines to pay based on the usage,instead of selling the turbine as one off charges. With this it can help airlines managing their cash flow.
Gojek providing a platform that optimize the performance and also revenue for their associate motor bike drivers. At the same time it gives the people easy and safe access to motor bike drivers for various services.
3 Examples above giving you idea on how innovation in business model is equally important and challenging.