>>37279610Emerald and Platinum were made as alternate takes on the same game with additional content and much higher replay value due to the Battle Frontier, and in Platinum's case it was a much-needed game because it fixed so many of DP's problems.
USUM were made to siphon more money out of those who bought SM by forcing them to upgrade, or they'll get left behind and be unable to access Additional Z-Moves, Additional Forms, Additional Species of Pokemon altogether (the first game to do so), the Generational Marking for multiple Pokemon (Legends, namely), and actually have WORSE postgame content than SM because the Faller Quest got axed in favor of Ultra Surfing, and ultimately have the same replay value as SM because the Battle Tree is virtually identical to its SM Counterpart and no additional facilities of a similar caliber were added, mostly because GameFreak can't be assed and loves to use the excuse of "the replay value is from playing online, you fucktard" even though online play with randos fucking sucks since it's either children with their shitty first hour ingame team, smogonfags, legendaryfags or VGCfags with little variety since they all use cookie cutter teams and sets. Oh, and the story's worse in USUM, but not too many people care about the story to begin with.
Yes, Upper Versions have always been inherently scummy, but they used to try to make them worth buying for more than just Tutor Moves and content they refuse to patch previous games with.