It's massively reinventing the wheel. ERPs do a lot of important things, and where it matters, they do it in a very compliant way. The other piece is the oppor

It's massively reinventing the wheel. ERPs do a lot of important things, and where it matters, they do it in a very compliant way. The other piece is the opportunity cost. Ideally, your expensive engineers are working on products and other high leverage work. Even if you want to build it, you have to find engineers that are interested in doing that when it's not the product.