I think the very fact that it is Taker is why it could be the end of his career. I don't think it is. I do think Sting will convince him to have one more match.

But I think Taker could go out like this because while he was bigger than the sport like Hogan/Austin/Rock etc, he never made it about him, so riding off into the sunset, or darkness if you will, would fit Taker the person/character more than making a spectacle.