Probably because many people loved BOTW and it was wildly successful, both critically and financially. So there's clearly a market for that style of game among Switch users.
Sure, but I'm interested in getting a good Pokémon game. I don't care what the market wants. Of course, the market will win, that's how all franchises get ruined.
> Of course, the market will win, that's how all franchises get ruined.
"The market" is how all franchises become franchises in the first place.