Has Sly ever made a Rocky movie where his character ends up losing, by the end fo the movie?!
That is all you need to know about Rocky.
This should answer your question, unless of course, Hollywood got together and said, let's pay him his "step-aside money" and have Sly kill off the Rocky character once and for all.
Which means, "Rocky 7, back from the grave" should be out sometime in 2035.