I wouldn't bet Moss will finish his career here. If guys like McGinest and Vrabel didn't finish their careers here, I wouldn't bet on Moss either. No one is guaranteed to spend their end of their career with the Pats.
He's the type of guy who is rich enough that he isn't going to work somewhere he doesn't want to, just won't. Will demand an outright cut or will just retire or threaten to.
This story parallels many myths in that a demi-god comes to earth, is persecuted unfairly and finally killed by the angry mob of idiots, only to rise up again and be worshipped as the true god he is.
*not saying that people dogging moss wanted to kill him or were idiots, just that the parallel is there.