Lol.

Do you think todays aircraft are not designed with the idea that the engine can fail?

And if you have unreliable components do you think redundancy is going to save you?

And lets be real - there already exist a aerospace arena where you have a higher number of CAT-events - it's called the military. And they deal with it by having a parachute for each passenger..

No - in effect building jet-engines (that are commercially viable i.e. fuel and efficeny) is not a easy to disrupt business. And the cost of entering it would be - high. And the benefit, well less obvious.