Absolutely. And what you do in that case is to sell motors to people who want them. If they give you feedback on how to make better motors, take it and make bet

Absolutely. And what you do in that case is to sell motors to people who want them. If they give you feedback on how to make better motors, take it and make better motors. What you don't do is presume that you know everything about how people want to use motors, and offer a subscription to a design service that does all of their engineering design for them, as a way to sell your motors.