The revenue models of most businesses are based on a mix of advertising, subscription, and licensing. The main difference between the three is that subscription-based revenue models are more flexible and can be easily adjusted to fit different needs. They can also be customized for different companies. A subscription-based model is generally easier to implement than a license-based model because there is a fixed amount of money that has to be paid upfront. A license-based model requires more consideration when designing the revenue model because it needs to be priced in advance and it needs to cover all types of content - including videos, images, and other content types.