>>59032815By being weaker?
They have been toning down the legendaries in scale.
Gen 2 were local legends, but in Gen 3 they can affect the whole planet and Gen 4 entire galaxies.
Then in Gen 5 and 6 they went back to regional/planetary entities and Gen 7/8/9 they're local legends again.
So in Gen 10 they'll probably be legendaries who can control waves and winds to some extent but are subordinated in the grand power hierarchy to Kyogre/Rayquaza who already fulfill the greater Ocean/Sky god archetype.
Like a Celebi and Dialga type deal.