Who uses industrial/commercial toilet paper in their homes? The factories can stop creating more but the existing supply is locked in large rolls most people don't use in their homes. Even not in large rolls it's not as nice as most toilet paper people use in their houses.
Put it on the shelves anyway. Most people aren’t going to be picky when the option is that or your hand.
I do. Rolls last longer. The paper doesn't shred so readily. You need more sheets, but less total mass. You can wipe mirrors and sinks without leaving paper residue behind.
The work toilet paper is more likely to be 1-ply recycled toilet paper in large rolls than what people would buy for a home. The factories that produce commercial TP may not be able to convert to the preferred residential products quickly.
If grocery stores run out of 2-ply but still offer 1-ply, people will buy 1-ply for home.
All they have to do is make smaller rolls and people will still buy it if there's a shortage, regardless of ply.
It is probably the same factory making it.
For example, Andrex (apparently Cottonelle in the USA) is owned by Kimberly Clark, which also sells commercial products.
The point is that it's a different flow of resources, e.g. retail distribution vs commercial property management supply.