Just because the Bible isn't read much during the service doesn't mean it isn't read. Episcopal churches typically have three or four readings (Old Testament lesson, Psalm, New Testament lesson and Gospel) on Sunday mornings. We see where that got them. Evangelical Protestants understand that their emphasis on Bible studies in small groups and personal devotion during the week is a much more efficient method of teaching Scripture than full reliance on readings in Church.
We hahve Bible study during the week, in addition, to the readings each day, and the homilies given by the priest that address the readings.
Teaching in two places!
But many fewer people hear it.