A protein soda pop, as they're pivoting to, sounds like a gross version of Coca Cola.

The protein bar could work. I personally don't like them, because most of them are just candy bars with added protein.

Meat substitutes (e.g. fake turkey made of tofu) are generally an inferior good, in both the economic sense and the sense of taste. It's not surprising to me that they don't work. Maybe if they're made much cheaper.