I saw an interview with Ian Anderson (of Jethro Tull fame), conducted relatively recently, in which he avers that what can be done with rock music, and music in general, has pretty much been done. I think he may have a point. Classical music went through numerous iterations over the course of centuries before it ran out its possibilites for innovation with the twelve tone masters. Blues birthed the iterations of jazz and rock, jazz taking about a century to run through its possibilites while rock took less, having run its course within the working life of one of its founders, Chuck Berry. And when one looks outside the musical sphere at things like science, where physicists are appealing to multiverses, the very existence of which can be neither proven nor disproven, and like art, which arrived at the same place music is today a century ago, one wonders (or I do, anyway) what the possibilites for western civilization actually are, moving forward.
Attitude is more important than the past, than education, than money, than circumstances, than what people do or say. It is more important than appearance, giftedness, or skill. -W.C. Fields