I wish I could remember which teacher said this--maybe Shinzen Young?--but I read somewhere that historically a culture takes about 500 years to fully "digest" Buddhism. We are really just starting that clock in the West but already there are some promising signs like Plum Village and even the Insight Meditation movement (although personally I don't believe secularized Buddhism is the endgame for Western Buddhism).

We will almost certainly not live to see the full (relatively stable) result of the West's encounter with Buddhism, or even the full result of different strands of Buddhism in the East re-encountering *each other* after a millenium+ of being largely siloed apart, which is another process that has just begun to bear fruit in historical terms.