Then you have to run a restaurant which are notoriously low-margin anyway. Just make fake a bunch of fake sales so the money comes out clean, needing to effectively manage a restaurant is a lot of overhead for someone who may have no interest in running a legitimate business.
They don’t want to do that because the restaurant could potentially become popular and then they’d have to actually function as a restaurant.
Then you have more revenue so it’s easier to launder large cash payments through it.
Then you have to run a restaurant which are notoriously low-margin anyway. Just make fake a bunch of fake sales so the money comes out clean, needing to effectively manage a restaurant is a lot of overhead for someone who may have no interest in running a legitimate business.