Reboots seem to promise easy money I guess. I'm not a big fan of rebooting/prequeling/sequeling everything that has ever been on TV.
Like said above: every second Superman/Batman has to have a new origin story. And they don't do single movies any more, they create franchises. Like with the new Ghostbuster, the new Independence Day or the newest Terminator, where they already planned sequels and spin-offs - before the movie is even out (to fail like in the three examples).
Or DC are planning for the next ten years even though the films are not good at all.
But I'm interested in the Westworld-Reboot.