Hotel restaurants might be an exception to the rule since there’s an additional layer of management.
The highest-end Cantonese place I’ve been to was the Crystal Jade branch in SF, on which they spent $14 million, but service was about like you’d get in a suburban strip mall.
https://www.sfchronicle.com/food/article/Crystal-Jade-San-Francisco-s-14-million-13030963.php