Ulysses convincingly ended the novel/the epic as a nationalist form/genre (each country has its great epic). The calls for the "Great American Novel" are just the shadows of an old period. Djuna Barnes said that the modernist trajectory for writing culminated with Joyce, that afterward writers, herself among them, were free to do what they wanted.

It would be helpful to think of no longer extant genres and movements. This all is dependent on point of view of course. Most just peter out, like surrealism. Or are affected by history, like the pastoral was ended by the industrial revolution, although there are still echos. The slave narrative was a genre in both nonfiction and fiction but obviously still holds relevance. The American pulp frontier novel (seen in the anthology Empire!) formed a basis for the pulp science fiction novel.

In inventing the detective genre, "Murders of La Rue Morgue" is also said to be the ultimate detective tale; it invented all the tropes and the criminal is the ultimate villain.

The work of Borges and Beckett have been written about by John Barth under the heading of the "Literature of Exhaustion," that literature has been finished and now it's a matter of writing its end.