[Etheryte]

> I don't think there was ever a period of time where creative works were just created for sake of itself rather for sharing it with others at masse.

Numerous famous writers, painters, artists, etc counter this idea, Kafka being a notable example, whose significant works only came to light after his passing and against his will. This doesn't take away from the rest of your discussion point, but art always has and always will also exist solely for its own sake.