I think agile is usually presented as an approach that tries to reduce a split between the business and the developers. If you take the business out of the equ

I think agile is usually presented as an approach that tries to reduce a split between the business and the developers. If you take the business out of the equation you usually get development models that just-for-fun open source projects have. Waterfall is cool with customers and sales, at least it was if it wasn't risky. So agile is a risk minimation strategy.