I completely agree. Google knew that they needed to be involved in this lawsuit or the future of their business, and perhaps the Internet, could be in jeopardy.

I completely agree. Google knew that they needed to be involved in this lawsuit or the future of their business, and perhaps the Internet, could be in jeopardy. If YouTube had to settle or try to fight the lawsuit on their own it is very likely that the outcome wouldn't have been favorable for Google. By buying them and taking the lawsuit on themselves Google is able to use their warchest to fight for the future of the Internet. I'm very excited to see how this plays out.