I think like anything in this hobby it could be a million things causing the problem. There are a ton of issues specific to a restaurant that would cause issues for a reef tank. Air quality alone is a big one, not to mention all the cleaning products used. I'm sure the fish are stressed more than in a normal home setting with all the noise/people ect. So it could be any number of factors including all the normal problems running a reef.
While it may be true they "don't care" because they can bill the client it seems bad business to "willingly" lose livestock on a constant basis. It's not like they are going to make any "real" money replacing fish considering the cost of their time.
Just remember everyone expects things to work but they don't care how or why. At first you try to educate/help but eventually you give up and just do your job, it's depressing how willfully ignorant the majority of people are.
While it may be true they "don't care" because they can bill the client it seems bad business to "willingly" lose livestock on a constant basis. It's not like they are going to make any "real" money replacing fish considering the cost of their time.
Just remember everyone expects things to work but they don't care how or why. At first you try to educate/help but eventually you give up and just do your job, it's depressing how willfully ignorant the majority of people are.