1) If a medical college has 'mandatory' lectures, its most likely because the lectures are terrible and no sane person would spend hours there.
2) If you are a high brow academic institution and yet provide horrible slide based lectures that I can watch in a 10 min Marrow video --> I am not going to class.
3) Time is money and there is more to life than medicine.
Lets be real, most coaching institutes today rule the roost when it comes to medical education because they retain the best teachers.