Does buying MW3 give you MW2?

Excuse me, I'm a bit confused about something. I've been looking into purchasing Modern Warfare 3, and I was wondering if by doing so, I would also gain access to Modern Warfare 2 as part of the deal. Is it a common practice for game developers or retailers to bundle previous installments with newer releases? Or is it more of a case-by-case basis? I'm just trying to get a clear understanding of what I'm getting for my money before I make the purchase. Thank you for your time.