It seems that the market disagrees, imho, there is still a market for such a game, specially after DayZ never delivered on its promises.
Right now SCUM ranks in the top 15 Steam Games while Dayz lies dead in the water at 196th in Steam charts.
I don't know for sure, but imho, it's the game DelayZ wanted to be and that's why the people bought it.
If the game can be the successor of DayZ remains to be seen, but it looks like it will outsell DayZ by a countrymile if the trend continues.
https://twitter.com/ScumGame/status/1037348704498397185
I'm just about to pull the purchase button on that one myself...