No doubt about it, the boomer generation was musically blessed. Still, many of my contemporaries listen to nothing but oldies, or songs that sound like oldies. They deride most new music as shallow and transient while they pine for the good ol' days. Their creative cortices have atrophied.
I'm not making the argument that old is bad and new is good, I'm just saying that old is old and new is new. Art changes. Van Gogh was rejected in his time. Warhol would have been burned at the stake in the century before he ruled the art world. Perhaps music IS more shallow and transient now... but so is the world it reflects.
Let's wait for the digital revolution to play itself out before we judge it. I suspect that there is a group of "mediabeatles" out there somewhere right now ready to lead a "cyber invasion". Remember, the world rarely recognizes brilliance until it become obvious... and even then it's all too often missed or dismissed.