This seems needlessly cynical. I don't think they said they never planned to release it.
They seemed to make it clear that they expect other labs to reach that level sooner or later, and they're just holding it off until they've helped patch enough vulnerabilities.
For a second there I read that as 'GTA 6', and that got me thinking maybe the reason GTA 6 hasn't come out all of these years is because of how dangerous and powerful it's going to be.