no they just hire someone else to work in their place. Restaurant owners I've worked for don't care if customers tip, that's the servers problem. And cooks don't care either if they are the reason the server doesn't get a tip. They get full wages regardless.
The employer can't pay employees less than they can get somewhere else or no one will take the job.
funny have you noticed the huge shortage of restauraunt workers lately, hmmm I wonder why