Most products fail. All the products you see in the stores are the result of a massive war that’s constantly being waged by companies fighting to the death.
Anyone serious about selling something either needs to bootstrap the crap out of it on tiny margins forever, or they need to launch their product.
Again, most products fail which often means bankruptcy for their creators. Having someone put their reputation on the line for something good-but-unintuitive is a great way to have consumers become more willing to take a chance on something they might otherwise be skeptical of. The George Forman grill is the perfect example of a bizarre product that benefited from a celebrity endorsement. I seriously doubt a “two sided griddle” is successful at all unless you give people a reason to listen to the sales pitch, and even then to give it a shot.