Read the article from B/CA, they’ll sell to corporate operators because the owners want anything, and I mean anything, that boosts their ego or might preserve their life. Airlines won’t spend the money because they pilots to be pilots and be aware of airspeed. I’m glad Rosey liked it.
The simple rule: Watch thy airspeed, lest the Earth rise up and smite thee. Worked well for 50 years.
GF