Is it a case of (a) they like Morgan Freeman's voice as a general preference (and therefore want someone who has a nice-sounding voice such as Morgan Freeman's for features such as how it sounds smart, deep, engaging, I don't know) or (b) they want someone who sound like Morgan Freeman to somehow represent to listeners that it's Morgan Freeman's voice?
What if a company chooses you as a voice artist largely on the basis that you sound like Morgan Freeman?