It has been 50 years, and still no Traditional group has found the One Ring (argument) to rule them all.
That is to say, a collection of explanation(s) and argument(s) before which all the groups crumble, resulting in a state where the Wielder of this "One Ring" becomes Master of Tradition (as it were) and whoever is left in the various other Traditional groups is 100% bad willed, resisting the truth out of stubbornness only.
Because the arguments of this One Ring are so powerful that the only rebuttal is "I don't care about the truth", an ad-hominem, or some other logical fallacy.
But the reality of the Traditional Catholic world today suggests that this One Ring either doesn't exist, hasn't been found, or isn't available for men to find -- because the Traditional world is divided, with many conflicting opinions, each of which is flawed in some way, with no group managing to come out on top or achieve much dominance, much less mastery over the others. The nail in the coffin? All Traditional groups, and even some non-Traditional ones, have men of good will to be found in them. If there were a One Ring, it would convince *everyone* of good will who was interested in the Truth. There would be no rational or logical excuses to stay in the "wrong" group any longer; all the objections would be answered in a satisfactory manner.
My explanation is that God reserves this One Ring to Himself -- He has it right now with Him in heaven, and so none of us are going to be able to find it, much less wield it. God will choose to intervene at some point, at which point he will forge* and/or give said One Ring to his Great Monarch, Angelic Pope, etc. after a Chastisement or whenever He decides to end the Crisis.
* I say "forge" because part of the power of this hypothetical Ring might be God's own testimony, with miracles, etc. so in that sense, the Ring wouldn't exist before God intervenes and works those miracles and/or appears to various individuals.
(I'm a Lord of the Rings fan, re-reading it now actually for the first time in 18 years, so I'm using the Ring analogy here.)
To refresh your memory about what the One Ring is: