I agree. But these days having an IP prints money. Especially an IP as popular as minecraft, fallout, elder scrolls, call of duty, warcraft, Diablo and doom.
But you could argue halo players would go to play/try it due to brand recognition
I’m sure there are no bungie fans left but when it came out people would be curious
Also advertising wise my first reaction seeing it on the telly was “this looks like halo, this looks like halo” and so on for every scene in the advert