"Your business model, including 3- or 5-year financial projections that include sales, profits, cash flows, and returns on investment." How can anyone reasonably predict where their N-month old company is going to be in 3-5 years?
Well, if you've ever had to write a business plan, you'll agree the projections for a startup end up being complete BS, but they make investors feel safe looking at a 20+ page document with lots of charts and numbers. That said, business plans can be useful and help the founders solidify their business model, predict costs, etc. If anything, it helps you get a vague idea of what to expect a few years down the road in…
I would guess the vast majority of tech entrepreneurs would disagree with the implication that business plans are generally useful.