I don't think they did really, music had been heading that way for a while and there were quite a few bands with the same style as the Beatles.
Wait, so who the hell else was doing http://www.youtube.com/watch?v=j6dy_XZrx-4&hd=1 in 1967?
I'm a little surprised by how little love the Beatles are getting. Yes, Brian May was a better guitarist, and Freddie Mercury was a better vocalist, but there's no question in my mind that the Beatles were
much more innovative. They were the zeitgeist in a way that no other band has been. They redefined what pop music could do. No, they didn't do it in a vacuum, but give them
some credit.