I was evaluating natural text to speech packages a year or so a go. And I was left with the eerie feeling that at least half of the offering must have been fronts for the same company/person, if not also exactly the same software. Nowhere was this more evident than in the sing-up and payment workflows of the various packages that followed exactly same pattern. So either in one corner of that market everyone copied each other there, or somebody just saturated that corner with their offerings.