It's the thing when one goes too high, the fell is worse. I can't be objective but I believe the post ww2 era was a special spot culturally for western cultures that cannot be replicated. Less boundaries, new mediums, new industries, new market and economy, with a decent post war peace mindset (post cold war, Berlin wall). Nowadays it's a plateau and the people who made it emerge are going away and the spirit of the era with them. At one point I guess we'll have to embrace it and celebrate a new space for new forms and art, because the giants impose a reference, a scale to measure art and productions against[1]. It may unleash new growth, new qualities. Even though I wonder what really new thing can happen. Internet promises are thin (to me). Maybe large scala computation + medicine will yield something deep but somehow I fear it touches on the human species altogether (current times are caressing SF, droids, SDVehicles, automated space, biotech). It's odd.

[1] see the never ending reboot movies.

ps: although I also have a strong feeling that classics are what remains even after an era goes. Timeless ideas like shakespeare's drama you know.