My spouse and I do this occasionally, where we pick a business off the street that we're walking by and think about how they make money. I think it can work fo

My spouse and I do this occasionally, where we pick a business off the street that we're walking by and think about how they make money. I think it can work for a small business where you can hold the whole thing in your head. It's _much_ harder when you're thinking about a multi-thousand-person enterprise with a dozen product lines.