I think elites abandoned the Western Canon in part because Mortimer Adler et. al. made it “middlebrow” during the mid-20th Century via the Great Books series.
That’s rather ironic, given that there is nothing middlebrow about Heroditus or Henry James.
I think now we’re coming full-circle, returning to the Canon, albeit with some interesting additions – more women, more “people of color.” I expect the Canon will grow, and that the intellectual fights going forward will be about what to add, not what to eliminate.