I think this is just the way the world is moving. I guess I have a duel perspective because I'm trying to get into wedding photography full time, but am also a recent bride. When I was searching for photographers and on a limited budget (which MOST people are these days)-- I wanted to spend all of my money on the best photographer I could possibly find. I could always order products later when I had more money, but I could never go back and hire a better photographer. I didn't want to spend 1/3-1/2 of my photography budget on products, seriously cutting down the money I had to spend on the actual photographer.
That's why I include DVDs in all of my packages. Of course, I'm also new and trying to build my business. Once I have a bit more experience and positive reviews under my belt, I plan to raise my prices and offer the DVD as an add-on for a flat rate (probably for the lower packages, I think it will still be included in the highest priced package).