No they didn’t have dlc, that’s why they sold MHG as a full price disc despite the fact that it was the same game as Monster Hunter with extra content, the same as Iceborne for World or Sunbreak for Rise.

World was just as bad at launch IMO. There was nothing worth doing post-story until Kulve Taroth came out.

Because not every game needs an endgame but publishers demand long-tail monitization so devs tack one on anyway.

G-rank was always a full price DLC that came a year or more later unless you skipped the base games (or Capcom didn’t localize them like with 4).