Oh I'll be checking Elden Ring out at some point too! Maybe not immediately, whenever it goes on special xD but definitely at some point!
As for the longevity of Lost Ark, that really depends on the western reception. It's been the #1 RPG in Korea for years and has a very dedicated playerbase, but it's not often western players pick up and actually stick with Korean games. Much like PoE apparently the game doesn't really "start" until you get to max level, so I guess we'll see what happens then.