Maybe not, but what they did with the Beatles was awesome. Was also really surprising at the time with how they were so strict over their licensing.
What didn't make sense though was Green Day Rockband and Lego Rockband. AC/DC was just a dlc pack basically, they didn't do anything special for that game, just slapped the songs in RB1 and shipped it on a disc for 20$ (which I think was exclusively at wal-mart).
I would really like to see them implement real guitar into the game. If they could do some kinda collaboration with the rocksmith guys that would be cool. I know they already have helped with bandfuse so heres hoping.
Green Day was their #1 requested band for DLC. I think Lego was the only way they were going to get some Warner tracks into Rock Band and was intended to compete with Band Hero as the E-rated music game.