It would have to be making chips 24/7, and you would have to have the work for it, at which point it probably would turn a profit in the short to medium term.
Nice video, and always gives me ideas, but one thing Im slightly unsure of is in that video, the forming tool is a gear like cutter which takes cuts of multiple teeth at varying depths in one pass, but he types in the number of teeth and diameter into the nc gear controller setup. Would it need a change of forming tool for each change of parameters? Or would one tool cover a range of tooth pitches?