Do not conflate Pokémon with Nintendo. The situation is way more complex. Game Freak, the actual developers of Pokémon, are a laughably small team for what is the biggest franchise in the world, and they refuse to get bigger or change the formula. Pokémon is the epitome of Japanese conservatism.
It should have been a true open world, with real-time battles. Basically Breath of the Wild, but you can deploy Pokemon instead of different weapons.