I don't see why many aspects of intonation couldn't be taught the same way ...
So in theory, it could be achieved by having multiple training sets (for the different intonation styles), along with analysis of the text to direct which part of the text needs what intonation. You might even be able to blend intonations.
I kinda doubt that would be profitable relative to just hiring readers, but in general you don't need to replace workers completely to cannibalize some of their wages/jobs.