It's about time Warner saw the value offered by having their content on You-Tube...word of mouth (or eye/ear in this case) is the best form of advertising your products and services.
It boils down to making money, if a music company can put tracks of their sighned artists on youtube while making money, they don't give a shit,As soon as they start loosing money thats when they act like, "we need a serious reform to help everyone prosper" or shit