I didn't think about cash streams when I started writing. My basic understanding was that I'd write something, send it out, and I'd either get paid for it or not. Of course, this was back before the Web and before the current age of self-publishing (which has been the model in the past). I wasn't thinking about cash streams or about different ways I might use the copyright on that work. I also didn't consider how long I could continue to benefit from my intellectual property.