Exactly, this has realistic characters that we've watched over decades, Rocky is iconic. Why should his story be done. We see comebacks and fighters become trainers all the time.
Fast and furious is so far beyond ridiculous it's not even funny, forced, paper thin stories and more ludicrous the longer they go on.
Stallone can milk this for all its worth. Its a good story, he is a good writer. If they can make 8 fast and furious they can make as many Rocky.