It won't. Pokemon is such a guaranteed money maker they won't sway far off the path and this is ESPECIALLY true when you look at Japan where they have entire cities made around the stuff. Pokemon outside of Japan is nothing when compared to what it is over there. Palworld was also released outside of a pokemon release so it isn't going to really effect their sales either. Gamefreak and Nintendo are probably gonna have issues with how it certainly pulls inspiration from a new titles.

With all that said I really enjoy palworld it's loads of fun and I usually hate survival games.