Are they, though? I suspect most butcher shops and restaurants are using antibacterial soap at this point. I go out of my way to try to buy non-antibacterial soap and it's often impossible to find. I imagine most businesses just order whatever's the first thing they see in the catalog/web site, and it's probably antibacterial because that's what most people think they want at home.
Impossible to find? Where do you shop? Where I live, the non-antibacterial soap outnumbers the anti-bacterial soap 4:1 or more on the shelves.
Can confirm that where I live near Houston it's very difficult to find.