If it were profitable to burn down a warehouse, there’d be a whole industry around it

Maybe, or maybe sales have been shitty and instead of product sitting on the shelves this let's them write stuff off and pocket cost of materials.

Just saying there's more to it than what it would mean to you or i if we had all our eggs in one basket and had to count on an insurance payout to keep above water. It's likely not a windfall for them, but i wouldn't be surprised if one warehouse fire is much more than a line item in a meeting or two, or even good news for some department or other if they were overextended in stock or something. A second or third big loss like that, though, would probably be required before anyone important is motivated towards any kind of inspection based on the bottom line though.