I think there's some nuance about charging for the thing as if it were not a prototype - so the prototype part is (somewhat) hidden to the user. People just res

I think there's some nuance about charging for the thing as if it were not a prototype - so the prototype part is (somewhat) hidden to the user. People just respond differently, and you get market testing. Somehow in hardware this seems crazy and there's a million reasons not to actually sell the product (certification, hard to change in the field, it's expensive!), so I think it's done less often.