I totaly agree with your vision of art ! I'll try to tell this vision with my friend on books, painting and other art, (to see them like a games where the spectator is te most important actor of art) and you word are simple but efficient to tell this way of thinking ! ;)
What Should We Do With Our Games?
A metagaming manifesto by Stephanie Boluk and Patrick LeMieux for Manifesto Jam.
On mobile? Also at patrick-lemieux.com/projects/What_Should_We_Do_With_Our_Games.