I would argue that countless games have already been made by top tier professional artists that IP-Steal the Ghibli theme.

Breath of the Wild, and Tears of the Kingdom should be included there.

I don't think those look like Ghibli. Maybe they drew inspiration, but are different enough. I would never confuse one for the other.

Regardless, those games required the hard work and countless hours of animators. Gen AI doesn't.