Although it seems increasingly likely that John Wick 5 will bring back Keanu Reeves, there are many reasons why this wouldn't be a wise choice for the franchise. The four John Wick movies so far have told the story of John's war with the High Table, the mysterious organization which oversees the world of assassins. After making enemies with all the wrong people, John tries to clear his name while the price on his head keeps rising. He ultimately succeeds, but it costs him his life at a dramatic duel in Paris.

https://screenrant.com/john-wick-5-movie-shouldnt-happen-reasons/