I used to believe in that as a natural evolutionary solution to the scourge of Islam, but have changed my mind in the last few years. If it does happen, it'll take decades, I mean more than 2 - too much damage would be done in that time.
It was my thinking too, for awhile. But it’s become apparent IMO, especially now with the alarming aftermath of the Arab Spring, that Western culture is not at all an effective antibody against radical Islam.
Even in societies where they’ve been exposed to Western culture for decades, once the radicals come to power, it’s thrown off overnight.