Cover all the components /reinforces

What cover means here? and also can you please explain "reinforces"? I'm not sure to what reffer "others" in this context

Companies that know how to build outstanding business models perform level 2 business model strategies, they know that it's not enough to just cover all the components of a business model companies competing at this level have business models with a story in which every single piece of the business model reinforces the others and contributes to the story