>>714020258 (OP)Real talk
What happened was, Gamefreak seriously underestimated how difficult the jump to 3D was. Gen 6 ended up ludicrously behind schedule, wound up having almost half the game cut for time/playability reasons, and tons of concessions made to get it out the door.
The expectation was that this would be excused as a weak generation because of the technical difficulties associated with the 3d development, and they could use the experience to do better next time.
Then gen 6 broke records, and they resolved to never actually put effort into the series again, because why bother.