Ah the rich people chasing their fantasies as usual. Because the man who has everything wants what he can't have, and the man who can buy anything wants what can't be bought. In this case, immortality.
Simply not going to happen. And if it did, some other aging process would kick in that we don't know about yet. Who knows, maybe it's even faster, because the old one was keeping it at bay somehow.
And even if it does work, all it will ever do is make the privileged even more so.