People who copy what exists copy a point-in-time artifact, and if you are managing the process correctly you are already hard at work on the next thing.
Scott D. AnthonyThere is what Steve Blank calls the stage where you are searching for a scalable business model. Then, there is the stage when you have found that model and need to scale it. In the former stage you have to have a "beginner's mind," be in learning mode, and expect to learn things you didn't anticipate.
Scott D. AnthonyOf course, it is worth it to take the time to think carefully through your assumptions, and ensure you at least have hypotheses around how you will create value. But use the analysis as a way to focus attention on the most critical assumptions, rather than spend a ton of time massaging the numbers.
Scott D. Anthony