To be fair when both teams are known for their good defenses, this was the result that was the most expected one, both teams have great defenses and they lack a lot of things on offense as well.
Milan did try a few times, and so did Juventus, and when you watch the highlights you could literally realize that you are not going to get a game that would make much sense, it wasn't really even a highlight, it was a boringlight or whatever you want to call it. I didn't watch the full game so I can't call it much, but watched the highlights on youtube and I can say that even the highlights were boring. Sometimes you have these type of games, but considering both teams are good teams, they must be happy to not lose the game against each other.
Well, you've got a point. When two good teams meet each other and can't get the best out of the other, the next thing to settle for is a draw but if anything, I felt Milan would have taken advantage of Juventus only need to defend and try to poach more. When a team relies solely on their defense strategy, definitely, there'd come a period where they will get tired and start making mistakes but Milan isn't that kind of club that makes use of that kind of opportunity. They become clueless after they've tried the only thing they are good at, which is to force counterattacks.