I agree to an extent since the same thing happened to Capone, Nitti and others, although I dont think that the prosecutors became "jealous" but instead that same negative emotion belonged to the people around them or from their own crime families who secretly filled the brains of investigators with all type of info, including lies, and thats when the prosecutors usually take "notice".

Btw, heres another interesting article from 1954 regarding Dewey and the Luciano case...