Nintendo would get very little benefit if they did.
I was trying to sort through the legalities of who owns what rights to Pokemon, and all I could tell is that it's pretty complicated. But the short answer is that Pokemon can only be released with Nintendo's blessing and that is the real thing they need. Nintendo basically controls the Pokemon IP, even if Game Freak gets most of the direct profit from it.
curl-6 bet me that PS5 + X|S sales would reach 56m before year end 2023 and he was right.
My Bet With curl-6
My Threads:
Master Thread, Game of the Year/Decade
Switch Will Be #1 All Time
Zelda Will Outsell Mario (Achieved)
How Much Will MH Rise sell?
My Bet With Metallox