People were unhappy with the direction of the original DC universe with things like Identity Crisis, Cry for Justice, etc. so they rebooted with New 52. People didn't like that so they did a soft reboot with Rebirth. People now have issues with that. The common factor? The same people were in charge over all of those changes.
Reboots don't work if the same people that "messed it up" to begin with are still in charge over the new stuff. The only actual change you'll ever see in the company's direction is if the upper staff changes.