Since the statement was meant universally across all contexts,
What about when Jesus closes the door of salvation?
Why would God find it necessary to say; "Seek me while I can be found"?
What about the ten virgins parable... five were ready but the other five it was too late?
but if I stretch and try to percieve how you see it Bobfrost perhaps you mean;
It's never too late (as in encouragement to take action), before it's tooooo late (we get old and die, and we never ventured to take a chance to; ask for forgiveness ride a horse, forgive, fly a plane, hike a mountain, lol, jump off a plane, have mercy on people, learn to paint, Pray to God, go back to school, accept Jesus as your saviour!?!)