Sure. Sure. Having an existing product gives you a framework to validate it, so makes things much easier. Yet, it is going to take more time and effort than

Sure. Sure. Having an existing product gives you a framework to validate it, so makes things much easier. Yet, it is going to take more time and effort than thinking of the idea itself. Someone outside of the field may still come up with an original idea (with much higher chance of it being a crackpot case), but would have no easy means to validate it, whether it relates to an existing product or not.