It only takes one single person to push the world into the true and complete redemption.
After all that's been done age accomplished, the long years of exile, all the Torah and Mitzvos, the refinement of the 288 Sparks of Tohu, the evolution of mankind, etc.
It now only takes one person, a Baal Teshuva, to reveal within him or herself Or Ein Sof, which as the term implies, is Infinite. Since it's Infinite, one revealed by a single person or is openly revealed to the entire world.
It's dependent on each of us, and one of us is destined to cross the like. I'm doing my best, and I am more then happy to see someone do it first.