>There's got to be some way of predicting which people will transform themselves

It's predictable to a large degree. Between moral foundations ( Jonatan Haidt, https://www.youtube.com/watch?v=kI1wQswRVaU ) and hormone levels (IIRC Gad Saad, can't locate specific video right now, some example articles below) there is growing body of scientific research relating to how much moral and political alignment is function of our body and brain.

http://blogs.discovermagazine.com/d-brief/2015/08/05/politic... http://www.unl.edu/polphyslab/polpsycharticle.pdf