>>58241654Because it released in January and only had a literal month of relevancy before Scarlet and Violet were announced, therefore focusing on Arceus DLC would create mutual cannibalization when Arceus was already cannibalized by being sandwiched between BDSP and SV in the first place.
Meanwhile, Z-A is dropping in October, so it has ample time to worry about DLC throughout Late 2025-Early 2026 before all marketing gears need to shift towards marketing Gen 10 starting Summer of 2026.