p.s. I don't want to oversimplify in turn ("absorption"). It's true that literary styles often develop in dialectical fashion. Witness the transformation of 20th-cent. Italian poetry, through a rejection (led by Montale & others) of D'Annunzio's heroic-romantic melodrama. At the same time, though, this was undertaken by poets who drew upon other stylistic currents - preceding &/or contemporary with D'Annunzio. The process is never simple. The same goes for the changes in American poetry during the 50s & 60s.
But I doubt that future developments will be led by another hermetic vanguard (as in the heroic romance of Language Poetry). Future developments will be built on those basic literary values previously mentioned : they will be applied in new ways.