I think the most likely outcome is that it will become like the flu: not that deadly in Western society, but mutating too rapidly for protection to last long, and still killing many elderly and people with chronic health conditions each year (according to https://en.wikipedia.org/wiki/Influenza, Influenza kills over half a million people each year)

(Both are RNA viruses. https://en.wikipedia.org/wiki/Orthornavirae)