Complex shapes such as those of turbines, propellers, and lenses, can be made repeatedly and in great variety because what is made is up to the software.
Such a tool is potentially a great force for lowing the cost of offering machine shop services. Instead of needing to buy a great many expensive tools, each with their limited applications, the business can begin profitably at a low volume of customer sales.
This method produces another positive consequence. If arbitrary shapes can be made without extra expense and time, the design of products, including specialized machines and tools, will prompt further innovation.