This. Prototypes should never be taken as the basis of a product, that's why you make them. To make mistakes in a cheap, discardible format, so that you don't make these mistake when making the actual product. I can't remember a single time though that this was what actually happened.

They just label the prototype an MVP and suddenly it's the basis of a new 20 year run time project.

In my current job, they keep switching around everything all the time. Got a new product, super urgent, super high-profile, highest priority, crunch time to get it out in time, and two weeks before launch it gets cancelled without further information. Because we are agile.