Earlier quoted context omitted.
Actually if you pay a little attention to Bezos, it's clear that his focus has been outer space at least since he was a college student. IMO Amazon was an opportunity that Bezos saw while Blue Origin is the fulfillment of his lifelong dream.
So if it’s his dream when does he start actually focusing on it?
He funds blue origin with more than a billion $ every year from the sales of his own amazon stock. Without amazon filling his pockets he can't finance blue origin.
He puts more of his money in blue origin every year than the amount amazon will pay for zoox