JAWS go away? That will never happen. Unlike Apple, Microsoft doesn't mind if third parties compete with them. Ever wonder why there aren't any screen readers for the Mac or iOS besides Voice Over? It's not because everybody thinks Voice Over is great, No it's because Apple won't allow it. Ever notice that the only Voice Over voices available for iOS are from Apple even though there are quite a few other voices that you could choose from? Because Apple won't allow them and they accomplish this by refusing to list them in the app store.
---
As is probably true of most synthesisers, many of Eloquence's voice characteristics can either be synthesizer controlled to a preset level or can be controlled by the application.
In JAWS and Code Factory's Eloquence for Windows, Inflection is more than likely force set or configured to be controlled by the synthesizer, while in NVDA the user can control it themselves.
---
@green gables
If NVDA is so great, why are there so many add ons? I'll tell you, it's because NVDA lacks most of the features that come built in to JAWS so some third party has to sit down and create those add ons just to bring NVDA up to the same feature set JAWS has out of the box.
Unless you installed an add on or bought an OCR program, until Microsoft added OCR to Windows 10, NVDA didn't have it built in, and still doesn't have it unless you are running the latest Windows. Meanwhile JAWS has had built in OCR for at least 4 years already, and the new version coming out this fall will be expanding the built in OCR's capabilities.