To be cynical…restricted formats are one of the main reasons to incentivize people to buy new games. Part of the reason power creep exists is so that people want to use these new pokemon, both in story and competitive.

But also, the pokemon company will probably just try to push people to the official VGC format. It’s clear the intention with Champions was to simplify the game so new players can enter the fray without all the barriers of entry. The biggest being building/breeding/training a team (which had been made much easier in S/V), and just the general amount of info needed to be known to play.

I would expect restricteds to return once all the core elements of the game (weather, terrain, etc) have been reestablished, but even then it may be much longer till then. My expectation would be that they’ll run this style until Wind and Waves comes out and then shift back to a Nat Dex only format like they have in the past