Unusually deep thoughts from you there, Justin. I shall reply in kind and say that once upon a time, we were the instigators of new and exciting music, often slipping in things we'd found in odd places, and definitely educating punters.
The boot is now on the other foot, and guests have often had stuff on their phones for a week that we won't be legally allowed to play for another week.
We are no longer the leaders, we're followers, playing catch up.
As for lazily playing the same old same old, well a lot of that is because we just don't get a lot of classic/danceable stuff to play with. How much chart music may well be requested, but never in a million years will it fill a dance floor. And that's before we get to the sweary rap stuff so beloved of the cool kids. ( And as you well know, somebody asks for Cha Cha Slide, and the floor's rammed ).