I've always had difficulty with the concept of "society alignment". How do you cast "Know Alignment" on a society?

If the concept of "LE society" means anything, it seems to me, it can only mean "a society in which LE behaviour and attitudes are encouraged more than other alignments". So by definition, yes, it will convert "most" people over time. If it doesn't, then I don't see what you can mean by calling it an "LE society".