Why doesn’t Paramount (and the rest of Hollywood) come up with a new idea instead of what appears to be an instant remake of a successful series that has run its course? Oh, excuse me, not remake, “franchise extension”.
Because it’s a business. When something makes money you keep at it. Think of it like oil scouting, when you find a nice deposit you put more wells in it to get all that black gold out.
Meanwhile of course they are doing other stuff, looking for other deposits like Joe Pickett, and working existing deposits like Star Trek.