Except with insurance they probably made money. The trick is for it to happen often enough that insurance gets too expensive.
Well insurance only pays out on the value the retailer bought their inventory for, not the sticker price. Yeah they’re getting a lot of money but rebuilding inventory and a new warehouse is probably more money. And Insurance companies might start considering underpaid employees as an insurance liability.

And Insurance companies might start considering underpaid employees as an insurance liability.

That’d truly be righteous but I suspect they’ll start expecting more surveillance, security, and fire systems instead.

Which, although they don’t improve conditions for the workers, are also expensive
And require more workers who, after a certain amount of time underpaid, might very well be too indifferent to notice certain systems were down when another one of these suckholes goes up in flames. Dunno. Could be.

suspect they’ll

automate

They turned the fire suppression system off once the firefighters arrived, reportedly. I hope the insurance company denies their claim. Seems like an act of God to me.
Assuming it wasn’t a company owned warehouse, the landlord will probably be making an argument that their disgruntled employee makes the fire their fault.