A news article is describing the phenomenon of lucky-dip bags in Tokyo libraries:
It's reached the point where you don't know what kind of books will be in them. It's expected that you will come to know authors you've never read and book types that you don't normally read, and it started last year.
The usual translation of "reached the point that" for ようになる does not seem to work here. Why would we ever have known what was in a lucky-dip bag? So, what is the function of ようになる in this sentence.
Also, is "expect" a valid translation of 考える in this context? I struggled with that part.