More than you ever really needed to know about the toilet paper shortage.
https://marker.medium.com/what-everyones-getting-wrong-about-the-toilet-paper-shortage-c812e1358fe0
The TLDR of it: Nobody is using their commercial toilet paper from their work jobs and it is not a quick or simple switch to produce the other type, requiring different machines and different materials.
If McDonald's can figure out how to sell suppliers' milk and hamburger buns from the drive through window to maintain supply chain efficiency, you'd think these manufacturers could figure out a way to package their commercial products for retail sale.
So basically identical to the issue with the milk shortage in store but dumping on farm.